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Eutetrarhynchus pacificus n. sp. is described from the spiral valve of Raja inornata Jordan & Gilbert off the coast of California, USA. The new species is distinguished from E. ruficollis (Eysenhardt, 1829) and E. leucomelanus (Shipley & Hornell, 1906) in having acraspedote rather than craspedote segments and a saccate rather than a branched uterus. It is distinguished from E. platycephali Palm, 2004 in lacking an enlarged hook in the eighth row of the basal armature and from E. beveridgei Schaeffner, 2013, which has a basal swelling and a distinctive basal armature. A partial redescription of E. ruficollis, the type-species of the genus, is provided based on available museum specimens, highlighting the need for a comprehensive redescription of this species to better define the characteristics of the genus. The presence of an undescribed species in museum collections is also noted. Based on the 28S ribosomal gene, the new species clustered with Dollfusiella in a molecular phylogenetic tree. The delimitation of Eutetrarhynchus and its relationship with Dollfusiella is discussed.

Gastrointestinal parasites of 106 red kangaroos, Osphranter rufus (Desmarest), are reported from Queensland, New South Wales, Victoria, South Australia, Western Australia and the Northern Territory...

The cestode genus Caulobothrium Baer, 1948 is reported from the Australian region for the first time with the description of C. pedunculatum sp. nov. from the spiral intestine of the stingr...

Eutetrarhynchus pacificus n. sp. is described from the spiral valve of Raja inornata JordanGilbert off the coast of California, USA. The new species is distinguished from E. ruficollis (Eysenhardt, 1829) and E. leucomelanus (ShipleyHornell, 1906) in having acraspedote rather than craspedote segments and a saccate rather than a branched uterus. It is distinguished from E. platycephali Palm, 2004 in lacking an enlarged hook in the eighth row of the basal armature and from E. beveridgei Schaeffner, 2013, which has a basal swelling and a distinctive basal armature. A partial redescription of E. ruficollis, the type-species of the genus, is provided based on available museum specimens, highlighting the need for a comprehensive redescription of this species to better define the characteristics of the genus. The presence of an undescribed species in museum collections is also noted. Based on the 28S ribosomal gene, the new species clustered with Dollfusiella in a molecular phylogenetic tree. The delimitation of Eutetrarhynchus and its relationship with Dollfusiella is discussed.

Beveridge, Ian, Smales, Lesley R. (2017): Cestode Parasites (Platyhelminthes) of Rodents from New Guinea and Adjacent Islands with a Redescription of Paroniella blanchardi (Parona, 1897) (Davaineidae). Records of the Australian Museum (Rec. Aust. Mus.) 69 (6): 451-460, DOI: 10.3853/j.2201-4349.69.2017.1667, URL: http://dx.doi.org/10.3853/j.2201-4349.69.2017.1667

The gastrointestinal helminth parasites of 170 common wallaroos or euros, Osphranter robustus (Gould), collected from all mainland states in which the species occurs as well as the Northern Territory, are presented, including previously published data. A total of 65 species of helminths were encountered, including four species of anoplocephalid cestodes found in the bile ducts and small intestine, and 61 species of strongylid nematodes, all but two of which occurring in the stomach, and with the remainder occurring in the terminal ileum, caecum and colon. Among the mainland subspecies of O. robustus, 52 species of helminths were encountered in O. r. robustus, compared with 30 species in O. r. woodwardi and 35 species in O. r. erubescens. Of the parasite species encountered, only 17 were specific to O. robustus, the remaining being shared with sympatric host species. Host-specific species or species occurring in O. robustus at a high prevalence can be classified as follows: widely distributed; restricted to northern Australia; restricted to the northern wallaroo, O. r. woodwardi; found only in the euro, O. r. erubescens; found essentially along the eastern coast of Australia, primarily in O. r. robustus; and species with highly limited regional distributions. The data currently available suggest that the acquisition of a significant number of parasites is due to co-grazing with other macropodids, while subspeciation in wallaroos as well as climatic variables may have influenced the diversification of the parasite fauna.

Collections of rhinebothriidean cestodes (Platyhelminthes) from Australian batoid elasmobranchs revealed the presence of a number of new genera and species. Ruptobothrium louiseuzeti n. g., n sp. is described from the reticulate whipray, Himantura australis Last, Naylor & Manjaji-Matsumoto, from off the Northern Territory and Mixobothrium queenslandense n. g., n sp. is described from the green sawfish, Pristis zijsron Bleeker, from off north-eastern Queensland. Two new species of Rhabdotobothrium Euzet, 1953 are described: Rhabdotobothrium meridionale n. sp. from the southern eagle ray Myliobatis tenuicaudatus Hector from off South Australia and Rhabdotobothrium anoxypristidis n. sp. from the narrow sawfish, Anoxypristis cuspidatus (Latham) from off north Western Australia. A new species of Scalithrium Healy & Reyda, 2016, Scalithrium australiense n. sp., is described from the reticulate whipray, Himantura australis Last, Naylor & Manjaji-Matsumoto, from off northern Western Australia. Scalithrium smitii (Shinde, Deshmukh & Jadhav, 1981) n. comb. is reported from Australian waters for the first time in the black spotted stingray Maculabatis toshi (Whitley) from off northern Western Australia. New host and geographical records are provided for Stillabothrium jeanfortiae Forti, Aprill & Reyda, 2016 from the brown whipray Maculobatis toshi (Whitley) and the black-spotted whipray, Maculabatis cf. astra (Last, Manjaji-Matsumoto & Pogonoski) from Moreton Bay in southern Queensland.

Seven new species of the cestode genus Rhinebothrium Linton, 1890 are reported from the spiral intestines of batoid elasmobranchs from the coasts of Australia. The new species are: Rhinebothrium dasyatidis n. sp. from the smooth stingray Bathytoshia brevicaudata (Hutton) from Spencer Gulf, South Australia; Rhinebothrium bunburyense n. sp. from the southern eagle ray, Myliobatis tenuicaudatus Hector from off Bunbury, Western Australia; Rhinebothrium vandiemeni n. sp. from the reticulate whipray, Himantura australis Last, Naylor & Manjaji-Matsumoto from off Cape van Diemen, Northern Territory; Rhinebothrium fluviorum n. sp. from the estuary stingray, Hemitrygon fluviorum (Ogilby) from Moreton Bay, Queensland; Rhinebothrium urolophi n. sp. from the wide stingaree Urolophus expansus McCulloch from off Beachport, South Australia; Rhinebothrium nickoli n. sp. from the brown whipray Maculabatis toshi (Whitley) and the reticulate whipray, Himantura australis Last, Naylor & Manjaji-Matsumoto, from Nickol Bay, Western Australia and from the white-spotted guitarfish Rhynchobatus australiae (Whitley) from off Broome, Western Australia and Rhinebothrium fungiforme n. sp. from the estuary stingray, Hemitrygon fluviorum (Ogilby) from Fog Bay in the Northern Territory.

Reptilian fauna of Australia is extraordinarily rich and diverse, but very little is known about parasites of reptiles, including proteocephalid cestodes of the genus Ophiotaenia La Rue, 1911. In the present survey, data on these parasites are summarised for the first time based on detailed evaluation of all available type and voucher specimens. This survey includes five named species, with four species redescribed, namely O. amphiboluri (Nybelin, 1917), O. longmani Johnston, 1916, O. mjobergi (Nybelin, 1917), and O. striata (Johnston, 1914), and 9 putative new species which are not formally described because of their poor quality and scarce material. An identification key is given for the five named species and unnamed species are briefly characterised with focus on their differential characteristics to facilitate their description as new taxa in the future. Australian species of Ophiotaenia form a monophyletic lineage, whose members share several morphological traits which are absent or rare in other proteocephalids, such as a three-layered embryophore, a scolex with large, anteriorly directed suckers, eggs with thick-walled embryophores, exclusively dorsal and paramuscular position of vitelline follicles, and a postequatorial to equatorial genital pore in most species. A new genus, Australophiotaenia, is proposed to accommodate the species from Australian reptiles that share the above-mentioned characters.

Parasitological examination of elasmobranchs of Moreton Bay, Queensland, Australia, resulted in the discovery of cestodes belonging to several armed genera of the Tetraphyllidea and Onchoproteocephalidea. Two new tetraphyllideans, Yorkeria moretonensis n. sp. and Yorkeria williamsi n. sp., are described from Chiloscyllium cf. punctatum (Hemiscylliidae). Yorkeria moretonensis n. sp. differs from its congeners in the possession of vitelline follicles that are discontinuous in the region of the ovary and in the length of its pedicels. Yorkeria williamsi n. sp. is most similar to Y. parva Southwell, 1927, but has larger, oval bothridia, longer pedicels and differences in the sizes of the scolex hooks. Yorkeria longstaffae Caira, Jensen & Rajan, 2007 is reported from Moreton Bay for the first time, and Spiniloculus mavensis Southwell, 1925 is re-reported from the type-locality and likely type-host (Moreton Bay and Chiloscyllium cf. punctatum, respectively), over 90 years after its original description. Six known onchoproteocephalideans, Acanthobothrium cannoni Campbell & Beveridge, 2002, A. chisholmae Campbell & Beveridge, 2002, A. ocallaghani Campbell & Beveridge, 2002, A. margieae Fyler, 2011, Megalonchos shawae Caira, Reyda & Mega, 2007 and M. sumansinghai Caira, Reyda & Mega, 2007, are reported from Moreton Bay for the first time, representing significant range extensions for all species.

A new species of Dasyurotaenia Beddard, 1912 (Cestoda: Cyclophyllidea) is described from the intestine of the dasyurid marsupial Dasyurus albopunctatus Schlegel from Papua New Guinea. The new species, D. talboti, differs from the type species, D. robusta Beddard, 1912 in possessing prominent transverse osmoregulatory canals and a symmetrical vitellarium. It differs from the only other congener, D. dasyuri Beveridge, 1984, in the number of rostellar hooks and the lack of any disparity in size between the anterior and posterior hook rows in D. talboti.

Paramoniezia suis Maplestone et Southwell, 1923 is redescribed from the type and only specimen, and is considered to be a genus inquirendum and species inquirenda, possibly based on a host misidentification. Paramoniezia phacochoeri Baylis, 1927 is redescribed from new material from Phacochoerus africanus (Gmelin) from South Africa and is transferred to Moniezia Blanchard. 1891 as M. phacochoeri (Baylis, 1927) comb. n. A redescription of M. mettami Baylis, 1934, also from Ph. africanus, establishes the independence of the two congeneric species parasitizing warthogs. A new genus, Phascolocestus, is erected for Paramoniezia johnstoni Beveridge, 1976 from vombatid marsupials as Phascolocestus johnstoni (Beveridge, 1976) comb. n., and additional host and distributional data are provided for this species.

A new species of Prochristianella Dollfus, 1946 is described from the spiral intestine of the wedgenose skate, Dipturus whitleyi (Iredale) (Rajiformes: Rajidae), off the north-western coast of Tasmania (Australia). Prochristianella mattisi sp. n. is characterised by an acraspedote scolex, two oval bothria, elongate, bent bulbs, a retractor muscle inserting at the base of each bulb and the presence of gland-cells within the bulbs and prebulbar organs. The tentacular armature is typical heteroacanthous, heteromorphous, with a characteristic basal oncotaxy and a metabasal armature with hooks first increasing and then decreasing in size along each principle row. It can be differentiated from other species of Prochristianella by a combination of morphological characters, such as the metabasal tentacular armature with eight hooks per principle row, a unique basal armature without enlarged hooks on the basal swelling and genital pores slightly posterior to the mid-line of the segment. The description of P. mattisi sp. n. increases the number of known species within Prochristianella to 20, eight of which occur in Australian waters. A key for the identification to species within Prochristianella is provided.

Redescriptions are provided for five incompletely described species of Otobothrium Linton, 1890: Otobothrium alexanderi Palm, 2004 from two species of carcharhinid sharks, Carcharhinus cautus (Whitley) and C. melanopterus (Quoy & Gaimard) at three localities off northern Australia; O. australe Palm, 2004 based on material collected from the type-host and type-locality and from six additional myliobatid and carcharhinid host species off Western Australia, the Northern Territory and northern Queensland; O. insigne Linton, 1905 from Rhizoprionodon terraenovae (Richardson) and Sphyrna tudes (Valenciennes) in the Atlantic Ocean off Senegal and the Democratic Republic of the Congo; O. mugilis Hiscock, 1954, previously known only from larval stages, based on adults from five sphyrnid and carcharhinid definitive host species off northern Australia and Malaysian Borneo; and O. penetrans Linton, 1907 from material collected from two species of hammerhead sharks (Sphyrnidae) in the Red Sea off Jordan and the Indian Ocean off Western Australia. Additional host and locality records are added for the type-species, O. crenacolle Linton, 1890 and for O. carcharidis (Shipley & Hornell, 1906). Two descriptions are provided for Otobothrium spp. treated here as Otobothrium sp. 1 from C. melanopterus off northern Australia and Otobothrium sp. 2 from Sphyrna zygaena (Linnaeus) in the Gulf of California, Mexico.

Bathygrillotia n. g. (Cestoda: Trypanorhyncha) is erected for B. rowei (Campbell, 1977) n. comb. and B. kovalevae (Palm, 1995) n. comb. The new genus is based on the possession of two bothria, an atypical, heteroacanthous, heteromorphous armature with longitudinal files of hooks on the external surface of the tentacle associated with each principal row, each consisting of a large anterior hook followed by two smaller hooks. Bathygrillotia is allocated to the Lacistorhynchoidea Guiart, 1927 and its relationships with Grillotia Guiart, 1927 are discussed.

A new genus of trypanorhynch cestode is described from the tubemouth whipray Himantura lobistoma Manjaji-Matsumoto & Last, 2006 in the South China Sea off Malaysian Borneo. Cavearhynchus foveatus n. g., n. sp. possesses four pedicellate bothria in a cruciform arrangement, a heteroacanthous, heteromorphous metabasal tentacular armature with five hooks per principle row and an alternating longitudinal file of intercalary hooks on the bothrial surface of each tentacle, but lacks prebulbar organs and gland-cells within the bulbs. It, thus, closely resembles taxa belonging to the lacistorhynchoid family Pterobothriidae Pintner, 1931. However, the new genus differs from other genera within this family in the possession of bothrial pits. Although a distinguishing characteristic of the superfamily Otobothrioidea Dollfus, 1942, representatives of this group exhibit two bothria and the bothrial pits are lined with spiniform microtriches, whereas the pit-like structures.of C. foveatus n. g., n. sp. entirely lack microtriches. Redescriptions of two species of Pterobothrium, namely P. lesteri Campbell & Beveridge, 1996 and P. platycephalum (Shipley & Hornell, 1906) Dollfus, 1930 are provided from material collected off Borneo and several localities off Australia. Moreover, new host and locality records are added for P. australiense Campbell & Beveridge, 1996 and P. pearsoni (Southwell, 1929) Beveridge & Campbell, 1989.

A new genus of trypanorhynch cestode is described from two species of sharks, the sliteye shark Loxodon macrorhinus MüllerHenle and the straight-tooth weasel shark Paragaleus tengi (Chen) collected in the Makassar Strait (off Indonesian Borneo) and Sulu Sea (off Malaysian Borneo). Ancipirhynchus afossalis n. g., n. sp. possesses two bothria and a heteroacanthous, heteromorphous tentacular armature with three distinctive files of hooks on the external tentacle surface but lacks prebulbar organs and gland cells within the tentacular bulbs. The hook arrangement of alternating files on the external surface of the tentacle resembles that seen in the superfamily Otobothrioidea Dollfus, 1942 in the genus Fossobothrium BeveridgeCampbell, 2005. However, the new species lacks the defining characteristic of this group, i.e. the paired bothrial pits. A Bayesian inference (BI) analysis of 37 LSU sequences of trypanorhynchs from three superfamilies provided evidence supporting the taxonomic placement of Ancipirhynchus afossalis n. g., n. sp. within the Otobothrioidea.

Beveridge I. & Justine J.-L. 2010. — Two new species of Prochristianella Dollfus, 1946 (Platyhelminthes, Cestoda) from the blue-spotted stingray, Neotrygon kuhlii (Muller & Henle, 1841) off New Caledonia. Zoosystema 32 (4) : 643-652.

Christianella Guiart, 1931 (Cestoda: Trypanorhyncha) is redefined as a subgenus of Grillotia Guiart, 1927 based on the type-species, G. (C.) minuta (van Beneden, 1849), from the elasmobranch Squatina squatina (Linnaeus). Grillotia smarisgora (Wagener, 1854) is treated as a synonym of G. (C.) minuta, as are G. angeli Dollfus, 1969 and G. bothridiopunctata Dollfus, 1969. Other species included in the subgenus are G. (C.) carvajalregorum Menoret & Ivanov, 2009 (formerly Progrillotia dollfusi Carvajal & Rego, 1983), G. (C.) australis Beveridge & Campbell, 2001, G. (C.) longispinis (Linton, 1890) n. comb. (formerly Rhynchobothrium longispine Linton, 1890) and G. (C.) yuniariae Palm, 2004. The subgenus is similar to Grillotia Guiart, 1927 (sensu stricto), having two bothria and an atypical heteroacanthous armature, but differs in having a single row of intercalary hooks, fewer, elongate segments with testes often in longitudinal columns, a distinctive basal armature, an internal seminal vesicle which extends beyond the cirrus or hermaphroditic sac and no uterine pore. The adults of three species are known, all parasitising members of Squatina Dumeril.

A new species of anoplocephalid cestode, Progamotaenia ualabati n. sp., is described from the small intestines of the wallabies Wallabia bicolor (Desmarest, 1804) and Macropus parma Waterhouse, 184...

Oncomegas aetobatidis sp. nov. (Trypanorhyncha: Eutetrarhynchidae) is described from the spiral valve of the dasyatid ray Aetobatus narinari (Euphrasen, 1790) from the Arafura Sea, Northern Territo...

Tetrarhynchobothrium tenuicolle Diesing, 1850 is redescribed from the type-specimens collected from Raja clavata Linnaeus in the Adriatic Sea. T. striatum (Wagener, 1854) is redescribed from voucher specimens from the type host, Myliobatis aquila Linnaeus, from the type-locality, off Naples, Italy. The two species are very similar in tentacular armature, but are provisionally maintained as independent species, since the armature of T. tenuicolle cannot be fully described and because all available specimens of T. striatum are immature, limiting comparisons of potential differences in segment anatomy. T. setiense Dollfus, 1969 is treated as a synonym of T. striatum. Zygorhynchus borneensis n. sp. is described from Himantura uarnacoides (Bleeker) and H. pastinacoides (Bleeker) off Sabah, Malaysia. The new species is distinguished from its congeners by the very small hooks present in the basal region and by the presence of a uterine pore. The metabasal tentacular armature of Didymorhynchus southwelli Beveridge & Campbell, 1988, described for the first time, is homeoacanthous and homeomorphous in form. However, it has a basal swelling with hook rows originating on the bothrial surface and terminating on the antibothrial surface of the tentacle.

Redescriptions are provided of Otobothrium carcharidis (Shipley & Hornell, 1906), O. crenacolle Linton, 1890, O. curtum (Linton, 1909) and O. propecysticum Dollfus, 1969 based on the type specimens and new material collected from elasmobranch hosts from Australia, Malaysia and New Caledonia. All are considered to be valid species. A neotype has been designated for O. crenacolle. A new species, O. parvum, is described from the spiral valve of Carcharhinus amblyrhynchos (Bleeker, 1856) and Triaenodon obesus (Rüppell, 1837) from New Caledonia. Otobothrium minutum Subhapradha, 1955 is considered to be a valid but poorly described species, being differentiated on the basis of a lack of testes posterior to the ovary. Otobothrium cysticum (Meyer, 1842) is considered a species inquirenda. The presence of an hermaphroditic sac is a new character for the genus while O. curtum lacks bothrial pits, a characteristic found in all congeners examined. The species described or redescribed here can be distinguished based on the number of segments and the number and distribution of testes, in addition to the features of the scolex. Otobothrium crenacolle is readily distinguished by its larger bothrial pits. The metabasal armature begins on either the bothrial or internal surface of the tentacle depending upon the species.

SUMMARYGenetic variation was examined in the anoplocephalid cestode Progamotaenia festiva, from Australian marsupials, in order to test the hypothesis that P. festiva, is a complex of sibling species and to assess the extent of host switching reported previously based on multilocus enzyme electrophoresis (MEE). Polymerase chain reaction (PCR)-based single-strand conformational polymorphism (SSCP) was used for the analysis of sequence variation in the cytochrome c oxidase subunit 1 (cox1) gene among 179 specimens of P. festiva (identified based on morphology and predilection site in the host) from 13 different host species, followed by selective DNA sequencing. Fifty-three distinct sequence types (haplotypes) representing all specimens were defined. Phylogenetic analyses of these sequence data (utilizing maximum parsimony and neighbour-joining methods) revealed 12 distinct clades. Other heterologous species, P. ewersi and P. macropodis, were used as outgroups and the remaining bile-duct inhabiting species, P. diaphana and P. effigia, were included in the analysis for comparative purposes. The latter 2 species were nested within the clades representing P. festiva. Most clades of P. festiva identified were restricted to a single host species; one clade primarily in Macropus robustus was also found in the related host species M. antilopinus in an area of host sympatry; another clade occurring primarily in M. robustus occurred also in additional kangaroo species, M. rufus and M. dorsalis. High levels of genetic divergence, the existence of distinct clades and their occurrence in sympatry provide support for the hypothesis that P. festiva represents a complex of numerous species, most of which, but not all, are host specific. Three distinct clades of cestodes were found within a single host, M. robustus, but there was no evidence of within-host speciation.

Members of the trypanorhynch cestode genus Grillotia Guiart, 1927 belonging to the Grillotia erinaceus (van Beneden, 1858) species complex are redescribed. The type-species of the genus, G. erinaceus, is redescribed from Raja spp. in the eastern and western north Atlantic and the Mediterranean. The redescription establishes the presence of: an hermaphroditic sac; internal and external seminal vesicles (but absence of an accessory seminal vesicle); a uterine pore; and the attachment of the retractor muscle in the mid-region of the tentacular bulb. G. pseuderinaceus Dollfus, 1969 and G. recurvispinis Dollfus, 1969 from Raja spp. in the Mediterranean are considered to be synonyms of G. erinaceus, following Palm (2004). G. dollfusi Carvajal, 1971 from R. chilensis Guichenot off Chile is redescribed from the paratypes and features of the terminal genitalia, consistent with those of G. erinaceus, are described for the first time. G. musculara (Hart, 1936) is redescribed from new material collected from the type-host, R. rhina (Jordan & Gilbert), off Nanaimo on the western coast of Canada. The features of the terminal genitalia of G. musculara are similar to those of the G. erinaceus group. The morphological features of G. borealis Keeney & Campbell, 2001 from Bathyraja spp. in the Bering Sea and the Sea of Okhotsk are summarised and illustrations of this species provided. G. brayi n. sp. is described from Amblyraja radiata from the coasts of Iceland and Britain. The new species differs from other members of the complex in lacking modified hooks 1 and 1′ at the base of the tentacle (differentiating it from G. erinaceus), a long pars vaginalis (differentiating it from G. dollfusi) and uncinate hooks in the band on the external surface of the tentacle (differentiating it from G. musculara). Brief descriptions are provided of two apparently new species of Grillotia currently represented in collections by single specimens.

A review of cestodes currently attributed to Progamotaenia zschokkei (Janicki, 1905) (Cestoda: Anoplocephalidae) suggests that six additional species are present: Pr. tenuis n. sp. found in Thylogale stigmatica (Gould) and T. thetis (Lesson), Pr. lomatosoma n. sp.from Macropus agilis (Gould), Pr. petrogale n. sp. from Petrogale spp. and Macropus dorsalis(Grey), Pr. fimbriata n.s p. from Lagorchestes conspicillatus Gould and L. hirsutus Gould, Pr. obesa n. sp. from Onychogalea fraenata (Gould) and O. unguifera (Gould) in north-eastern Australia and Pr. kellerae n. sp. from O. unguifera in north-western Australia. The new species are differentiated by a combination of characters: prominence of scolex lobes, number of lobes in the fimbriated velum, testis number and distribution, size of the cirrus-sac, morphology of the uterus and presence or absence of a pyriform apparatus in eggs from terminal segments. The morphological differences found support earlier molecular studies, in that cestodes within each host genus are distinct, with the exception that considerable morphological variation exists within Pr. petrogale. Principal components analysis suggested that most of the cestodes from Petrogale spp. belonged to Pr. petrogale. The status of specimens from Pe. lateralis is unclear. More detailed molecular studies are required to determine the significance of the morphological variation within this taxon. A key is provided to species within the complex and the related species Pr. villosa (Lewis, 1914).

Pseudochristianella elegantissima sp. nov. (Cestoda: Trypanorhyncha) is described from the spiral valves of the rays Dasyatis brevis (Garman, 1880) and D. longus (Garman, 1880), from the Gulf of California, Mexico. Also described is P. nudiscula sp. nov. from rays Rhinobatos productus Ayres, 1854, D. longus , Myliobatis longirostris Applegate & Fitch, 1964 and Zapteryx exasperata (Jordan & Gilbert, 1880) from the same location. The species are distinguished from one another and from the only existing species within the genus, P. southwelli Campbell & Beveridge, 1990, by differences in the arrangement of bill-hooks on the external surface of the basal swelling of the tentacle and by the number of hooks in each row of the metabasasl armature.

Three new genera of eutetrarhynchid trypanorhynch cestodes are described from Mobula spp. (Mobulidae) from the Gulf of California, Mexico. Fellicocestus mobulae gen. et sp. n. from the gall bladder of Mobula japonica (Miller et Henle) is distinguished by elongate bothria, a pars bothrialis equal in length to the pars vaginalis, masses of gland cells in the pars vaginalis and an heteromorphous armature in which hook rows arise from a central file of hooks on the bothrial surface of the tentacle and terminate in a central file on the antibothrial surface. Species of Mobulocestus gen. n. occur in the nephridial system and cloaca of rays and are characterized by two bothria, an heteroacanthous armature with hook rows beginning on the bothrial surface and terminating on the antibothrial surface, and by hooks at the beginnings of rows with an apical cavity. M. nephritidis sp. n. and M. lepidoscolex sp. n., both from the nephridial system of Mobula thurstoni (Lloyd) are differentiated by testis number and by the presence of scale-like microtriches on the tegument of the scolex of M. lepidoscolex. M. mollis sp. n., from the cloaca of Mobula thurstoni is distinguished by testis number (97-111 in M. lepidoscolex, 20-22 in M. nephriticus and 48-70 in M. mollis). Hemionchos gen. n. from the spiral valve of Mobula spp. has two bothria, an heteroacanthous armature, hook rows arising on the bothrial surface and terminating on the antibothrial surface and hooks at the beginning of rows with an apical cavity. It differs from Mobulocestus in having a distinctive basal armature and both hook files 1 and 1' on the bothrial surface, but has an additional, small, satellite hook adjacent to each hook 1'. H. striatus sp. n. from the spiral valve of Mobula thurstoni and M. japonica is differentiated by having a basal armature of closely packed arrays of small, uncinate hooks. H. mobulae sp. n. from the spiral valve of Mobula japonica and M. munkiana Notarbartolo di Sciari, differs in testis number and in having large, flattened hooks in the basal armature. H. maior sp. n., from the spiral valve of M. japonica, is larger, differing in both the number of testes and in the basal armature.

Cestodes were collected from deep-sea sharks caught off New Caledonia, South Pacific. Vittirhynchus squali n. g., n. sp. (Trypanorhyncha: Gilquiniidae) is described from the spiral valve of Squalus melanurus Fourmanoir and Rivaton. The new genus possesses four bothria and a typical heteroacanthous metabasal armature but has a file of three macrohooks forming a short chainette on the internal surface of the basal armature. Sagittirhynchus aculeatus n. g., n. sp., from the spiral valve of Centrophorus sp. (undescribed), also has four bothria and a typical heteroacanthous armature but lacks a distinctive basal swelling and has the final hooks of each principal row prominently enlarged. Gilquinia minor n. sp., from the spiral valve of Centrophorus sp. (undescribed), is distinguished by the presence of only five hooks per principal row compared with eight in congeners. Gilquinia sp. is reported from Squalus melanurus. G. robertsoni Beveridge, 1990 is reported from S. megalops (Macleay).

Three new genera of trypanorhynch cestodes from Australian elasmobranch fishes collected in the Arafura Sea, off the Northern Territory, are described. Fossobothrium perplexum n. g., n. sp. (Otobothriidae), from the spiral valves of Anoxypristis cuspidata (Latham) and Pristis zijsron Bleeker, is similar to the otobothriid genera Pseudotobothrium Dollfus, 1942 and Poecilancistrium Dollfus, 1929 in possessing bothrial pits and a band of hooks on the tentacle, but differs from all known otobothriid genera in having the pits joined by a prominent velum. Iobothrium elegans n. g., n. sp. (Otobothriidae), from the spiral valve of Himantura jenkinsi (Annandale), is placed in the Otobothriidae because it possesses bothrial pits, but differs from Otobothrium Linton, 1890 and other genera in lacking intercalary hooks between the principal rows and in possessing a chainette on the external surface of the tentacle in the metabasal region. Oncomegoides celatus n. g., n. sp. (Eutetrarhynchidae), from the spiral valve of Dasyatis microps (Annandale) and Himantura jenkinsi, resembles Oncomegas Dollfus, 1929 in possessing two bothria and a megahook on the bothrial surface of the basal armature, but differs in possessing an extra row consisting of four intercalary hooks formed by the overlapping of two intercalary hooks on the external tentacular surface between each of the opposing principal rows and is therefore an atypical heteroacanth.

Sequence variation within 3 morphologically defined species of the anoplocephalid cestode genus Progamotaenia (P. ewersi, P. macropodis and P. zschokkei) was investigated using the cytochrome c oxidase subunit 1 gene. The magnitude of genetic variation detected within each morphospecies suggests that, in each instance, several cryptic species are present. Within P. ewersi, 5 genetically distict groups of cestodes were detected, 1 shared by Macropus robustus and M. parryi in Queensland, 1 in M. agilis from Queensland, 1 in Petrogale assimilis from Queensland, 1 in Macropus fuliginosus from South Australia and 1 in Wallabia bicolor from Victoria. In P. macropodis, cestodes from M. robustus from Queensland, Western Australia and the Northern Territory, M. parryi from Queensland and M. eugenii from South Australia were genetically distinct from those in Wallabia bicolor from Queensland and Victoria and from M. fuliginosus from South Australia. P. zschokkei consisted of a number of genetically distinct groups of cestodes, 1 in Lagorchestes conspicillatus and L. hirsutus from Queensland and the Northern Territory respectively, 1 in Petrogale herberti, P. assimilis and M. dorsalis from Queensland, 1 in Onychogalea fraenata from Queensland, 1 in M. agilis from Queensland and 1 in Thylogale stigmatica and T. thetis from Queensland. In general, genetic groups within each morphospecies were host specific and occurred predominantly in a particular macropodid host clade. Comparison of genetic relationships of cestodes with the phylogeny of their hosts revealed examples of colonization (P. zschokkei in M. agilis) and of host switching (P. zschokkei in M. dorsalis).

Dollfusiella elongata n. sp. is described from the spiral valves of Rhinobatos rhinobatos (Linnaeus) and R. cemiculus Geoffroy St-Hilaire off the coast of Tunisia, while D. aculeata n. sp. is described from the spiral valves of Dasyatis pastinaca (Linnaeus) off the western coast of France, Dasyatis tortonesei Capape off the coast of Tunisia and Dasyatis chrysonota (Smith) var. marmorata off the coast of Senegal. A redescription of Dollfusiella spinifer (Dollfus, 1969) Campbell & Beveridge, 1994 is included based on the type-specimens from Myliobatis aquila (Linnaeus) from the Mediterranean coast of France. Prochristianella papillifer (Poyarkoff, 1909) Dollfus, 1957 is redescribed from specimens from Dasyatis pastinaca off Tunisia and the scolex and mature segments are described for the first time. Parachristianella trygonis Dollfus, 1946 is redescribed from Dasyatis pastinaca off the coast of France and Dasyatis tortoneseioff Tunisia, with the mature and gravid segments being described for the first time. Parachristianella monomegacantha Kruse, 1959 is reported for the first time from the elasmobranchs Dasyatis pastinaca, Myliobatis aquila, Rhinobatos cemiculus and R. rhinobatos. Definitions of the related genera Dollfusiella Campbell & Beveridge, 1994 and Prochristianella Dollfus, 1946 are revised. Prochristianella spinulifera Beveridge & Jones, 2000 is transferred to Dollfusiella as D. spinulifera n. comb. New combinations proposed formally for the first time are: D. aetobati (Beveridge, 1990) n. comb., D. bareldsi (Beveridge, 1990) n. comb., D. lineata (Linton, 1909) n. comb., D. litocephalus (Heinz & Dailey, 1974) n. comb., D. macrotrachelus (Heinz & Dailey, 1974) n. comb., D. michiae (Southwell, 1929) n. comb., D. musteli (Carvajal, 1974) n. comb., D. schmidti (Heinz & Dailey, 1974) n. comb. and D. vooreemi (Sao Clemente & Gomes, 1989) n. comb. The type-specimens of Prochristianella tenuispinis (Linton, 1890) Dollfus, 1946 were re-examined and the species is transferred to Dollfusiella as D. tenuispinis (Linton, 1890) n. comb. Features of known species of Dollfusiella are presented in tabular form.

Progrillotia pastinacae Dollfus, 1946 (Cestoda: Trypanorhyncha) is redescribed from the spiral valve of Dasyatis pastinaca (Linnaeus) (Dasyatididae) from the coast of France. Progrillotia dasyatidis sp. n. is described from the spiral valves of Dasyatis tortonesei Capapé (Dasyatididae) from the Mediterranean in the Gulf of Gabès (Tunisia) and D. pastinaca from the Bassin d'Arcachon (France). The new species differs from congeners in having, on the tentacles, a single rather than two rows of intercalary hooks and fewer testes. The generic definition is emended based upon the new species, the redescription of P. pastinacae Dollfus, 1946 and re-examination of the type specimen of P. louiseuzeti Dollfus, 1969. Important additional characters noted are that the tentacular hooks are solid, a prebulbar organ is present and that there are gland cells attached to the retractor muscle within the bulb. A cladistic analysis suggests that the genus is closely allied with the Eutetrarhynchidae. Progrillotia dollfusi Carvajal et Rego, 1983 is provisionally excluded from the genus as the adult of the species is unknown and a key character of the genus is that the testes are pre-ovarian.

Progamotaenia capricorniensis sp. nov. (Cestoda: Anoplocephalidae) is described from the wallabies Macropus dorsalis (Gray, 1837] and Petrogale assimilis Ramsay, 1877 from Queensland, Australia. The new species is characterised by a fimbriated velum composed of 26-32 digitiform to triangular projections on each side of the proglottis, paired uteri and 140-190 testes distributed in a single band across the medulla. Minor variation occurs in the distribution of the testes. The above characters distinguish the new species from its most closely related congeners P. lagorchestis (Lewis, 1914), P. proterogyna (Fuhrmann, 1932), P. spearei Beveridge, 1980 and P. villosa (Lewis, 1914). P. capricorniensis appears to exhibit a highly disjunct distribution within its usual host, M. dorsalis.

A new genus, Viscachataenia, is erected to accommodate the anoplocephalid cestode Cittotaenia quadrata von Linstow, 1904, based on a redescription of the species from material collected from the chinchillid rodent Lagidium viscacia in Argentina. The new genus is characterised by paired genitalia, a reticulate uterus and the vagina entering the genital atrium anterior to the cirrus-sac. Viscachataenia therefore has similarities with Monoecocestus Beddard, 1914, a genus which is common in South American rodents but which has a single set of genitalia in each segment. Cittotaenia viscaciae (Spasskii, 1951) and Bertiella findlayi Mazza, Parodi & Fiora, 1932, also from viscachas, are considered synonyms of V. quadrata.

Borneo is considered a centre for biodiversity in both the terrestrial and aquatic environments. However, information on the diversity of parasites and trypanorhynch cestodes infecting sharks and rays in particular is rather limited at present. During a large-scale study focusing on the parasite diversity of elasmobranchs from Malaysian and Indonesian Borneo a total of 520 spiral intestines of elasmobranchs were collected during seven years of extensive sampling. Trypanorhynch cestodes were discovered in 163 specimens belonging to 43 different elasmobranch species (i.e. 17 species of sharks and 26 species of rays). Overall, 50 species of trypanorhynchs were recovered from the hosts' spiral intestines, some of which represented new species and genera that have been subsequently described. Numerous new host records are added for previously described species. Of the 50 trypanorhynch species present in waters off Borneo 30 (= 60%) were recovered from rays, while 20 species (= 40%) were found in sharks. The geographical distribution of these cestode species was dominated by taxa that occur in the Indo-west Pacific (= 30%) followed by species endemic to Borneo (= 28%). Nine species (= 18%) are found both in Borneo and Australia or have a cosmopolitan distribution. The present study also assessed the host specificity for 16 species belonging to three prominent trypanorhynch genera recovered from elasmobranchs from Borneo (i.e. Dollfusiella CampbellBeveridge, 1994, Prochristianella Dollfus, 1946 and Parachristianella Dollfus, 1946). Most species (= 63%) were euryxenous utilizing hosts from different orders or even classes, with only a single species (i.e. Dollfusiella imparispinis SchaeffnerBeveridge, 2013) being oioxenous utilizing a single host species. The remaining species (= 31%) were mesostenoxenous utilizing different host species from a single genus. The least host specific taxa were the three representatives of Parachristianella and Prochristianella clarkeae Beveridge, 1990.

A new genus, Proemotobothrium (Trypanorhyncha: Otobothriidae), is erected to contain P. linstowi (Southwell, 1912) n. comb. (syn. Otobothrium magnum Southwell, 1924) and P. southwelli n. sp. The new genus is characterised by two bothridia, paired bothridial pits, an acraspedote scolex, elongate bulbs, four hooks per principal row, hooks 4 (4') being small and uncinate, a single, filiform, intercalary hook between each principal row and by the arrangement, in tandem, of the two or three extra hooks of the armature of the external surface of the tentacle, a pattern previously known only in the family Mixodigmatidae. The two species are distinguished from one another on the basis of measurements of the scolex and bulbs, the sizes of the hooks of the principal rows and by the number and size of the additional hooks in the linear arrays on the external surface of the tentacle.

Gastrointestinal helminths were collected from pademelons of the genusThylogale(Marsupialia: Macropodidae) in eastern Australia and Papua New Guinea. Examined were 12Thylogale stigmatica stigmaticaand 13T. s. wilcoxi, the latter subdivided into eight specimens from the northern limit of their distribution and five from southern areas, all from eastern Queensland, Australia, oneT. s. oriomofrom Papua New Guinea and tenT. thetisfrom southeastern Queensland and northern New South Wales, Australia. Six species of cestodes and 40 species of nematodes were found. The helminth community ofT. s. stigmaticawas similar to that found in northern specimens ofT. s. wilcoxi, while differences from the helminth community present in southernT. s. wilcoxicould be accounted for by parasites acquired from sympatricT. thetis.Thylogale thetisharboured a community of helminths distinct from but related to that inT. stigmatica. The evidence suggests that all subspecies ofT. stigmaticaexamined share a common helminth community, but that in areas of sympatry,T. stigmaticaandT. thetisshare some of their parasites.

Prochristianella spinulifera n. sp. (Cestoda: Trypanorhyncha: Eutetrarhynchidae) is described from the spiral valves of the rays Rhinobatos typus (Rhinobatidae) and Himantura fai (Dasyatidae) from Heron Island, Queensland, Australia. The new species is distinguished from all congeners by the deltoid microtriches covering the anterior 80% of the scolex and the presence of a dorsoventrally elongate genital atrium. The species occurred in the anteriormost section of the spiral valve of R. typus. The orientation of the armature of this and other congeners is such that principal rows of hooks begin on the bothridial surface of the tentacle and end on the antibothridial surface.

Objective To compare the sensitivities of three coprological techniques for the diagnosis of Anoplocephala perfoliata infection in horses and to assess the value of the methods for diagnosis of horses at risk of clinical cestodiasis. Design Faecal samples were collected from necropsied horses with or without A perfoliata infection and examined using one sedimentation and two different flotation methods. The coprological results were compared with worm counts performed at necropsy of the horses and the degree of mucosal damage. In addition, the efficiency of recovery of A perfoliata eggs from faeces was tested. Results The overall sensitivities of the methods ranged from 22.5 to 37.5%, and the capacity of the methods to diagnose infection increased with the intensity of infection. A simple flotation method achieved a better sensitivity (37.5%) at all intensities of infection compared with the other two methods (22.5 to 25%). That method was also more sensitive in detecting eggs in ‘negative’ faecal samples spiked with known numbers of A perfoliata eggs. Conclusion The results indicated that, despite the low sensitivities of present methods, faecal flotation is likely to be of value in detecting horses at risk of clinical disease.

International audience; Trypanorhynch metacestodes were examined from teleosts from coral reefs in eastern Australia and from New Caledonia. From over 12,000 fishes examined, 33 named species of trypanorhynchs were recovered as well as three species of tentacularioids which are described but not named. Host-parasite and parasite-host lists are provided, including more than 100 new host records. Lacistorhynchoid and tentacularioid taxa predominated with fewer otobothrioid and gymnorhynchoids. Five species, Callitetrarhynchus gracilis, Floriceps minacanthus, Pseudotobothrium dipsacum, Pseudolacistorhynchus heroniensis and Ps. shipleyi, were particularly common and exhibited low host specificity. Limited data suggested a higher diversity of larval trypanorhynchs in larger piscivorous fish families. Several fish families surveyed extensively (Blenniidae, Chaetodontidae, Gobiidae, Kyphosidae and Scaridae) yielded no trypanorhynch larvae. The overall similarity between the fauna of the Great Barrier Reef and New Caledonia was 45%. Where available, information on the adult stages in elasmobranchs has been included.

The intestinal tracts of 130 horses were examined for infection with Anoplocephala perfoliata at necropsy. Fifty horses (38.5%) harboured the tapeworm, and the site of attachment of each worm was recorded using predetermined anatomical landmarks. The worms were attached in four regions of the gastrointestinal tract: 17% of the worms were found at the ileocaecal junction, 81% on the caecal wall, 1.7% in the terminal ileum and 0.2% in the ventral colon. The severity of lesions produced at the sites of attachment was related to the number of worms attached. Due to the small area of the ileocaecal junction, worms at this site were attached in close proximity, resulting in more severe lesions. The major features of the lesions included ulceration, diphtheritic membranes and thickening of the mucosa, submucosa and lamina propria. There was an increase in the number of eosinophils and a decrease in the number of lymphocytes present at the sites of lesions.

Sampling of a large number of elasmobranchs from coastal waters off Borneo revealed the presence of five new species of Dollfusiella Campbell & Beveridge, 1994 (Trypanorhyncha: Eutetrarhynchidae), namely D. angustiformis n. sp., D. hemispinosa n. sp., D. spinosa n. sp., D. imparispinis n. sp. and D. parva n. sp. Dollfusiella angustiformis n. sp. is described from the spiral intestines of four species of the dasyatid stingray genus Himantura Muller & Henle from both the Indonesian and Malaysian parts of Borneo. All the other species were obtained from Malaysian Borneo. Dollfusiella hemispinosa n. sp. is described from the spiral intestines of three species of Himantura, whereas D. spinosa n. sp. was obtained from several specimens of Pastinachus solocirostris Last, Manjaji & Yearsley (Dasyatidae) as well as from Taeniura lymma 1 (sensu Naylor et al., 2012) (Dasyatidae), Neotrygon kuhlii 2 (sensu Naylor et al., 2012) (Dasyatidae), and Glaucostegus cf. typus (sensu Naylor et al., 2012) (Rhinobatidae). Dollfusiella imparispinis n. sp. is described from the spiral intestine of a single specimen of Chiloscyllium punctatum Muller & Henle (Hemiscyllidae) from the South China Sea off Sarawak, whereas D. parva n. sp. was obtained from several species of Himantura. Specimens of the five novel taxa possess scoleces covered with enlarged microtriches, a morphological characteristic exhibited by several other congeners. However, the new species differ from all congeners by possessing unique patterns of oncotaxy as well as combinations of additional morphological features. The number of valid species within Dollfusiella is increased to 26. For this reason, a key for the species of Dollfusiella is provided. Furthermore, novel information on hosts and geographic distribution is provided for two previously described species of Dollfusiella, D. michiae (Southwell, 1929) and D. spinulifera (Beveridge & Jones, 2000). The latter species differs slightly from the original description and shows a much higher variability with regard to the lengths of the scolex and muscular bulbs and the number of testes. These variable characters subdivided specimens of D. spinulifera into relatively distinct groups. However, the specimens did not differ in their oncotaxy and are considered to represent a single variable species.

This work includes all published records, to April 2015, of the helminths occurring in Australasian monotremes and marsupials, with due regard for synonymy and an attempt to include life history studies, pathological observations and epidemiology. It also contains all unpublished records known to us and referrable, by accession numbers, to curated collections in Australia and overseas. Information is presented by host family, genus, species, sub-species or chromosome race and includes the names of all host species from which no parasites have been recorded. Most records pertain to free-living and wild animals; where they do not, they have been annotated appropriately. Unpublished information known to the authors has been included in annotations to entries, where appropriate. Parasites are arranged as follows: Trematoda, Cestoda, Nematoda, Acanthocephala, and their systematic position is indicated by abbreviations placed before the name. The authority for each parasite record is given after the author’s name, as a number in parentheses, and this refers to the numbered (1-664) list of references. A parasite-host list is presented alphabetically, irrespective of taxonomic affiliation together with the host species in which they are known to occur. Hosts are arranged initially by family and alphabetically within each family.

Prochristianella cairae n. sp. is described from the spiral intestines of two species of bamboo sharks, Chiloscyllium punctatum Muller & Henle and Chiloscyllium indicum (Gmelin) (Hemiscyllidae) off the coast of Malaysian Borneo. Thespecies is distinguished from congeners by enlarged microtriches covering the whole scolex peduncle, a uniquearrangement of hooks on the basal swelling, a dissimilar number of hooks in each principle row in the metabasal armatureand hook files 1 and 1’ not being distinctly separated. Prochristianella jensenae n. sp. is described from the spiralintestines of three species of whiptail stingrays, Pastinachus solocirostris Last & Manjaji-Matsumoto, Pastinachus atrus (Macleay) and Pastinachus gracilicaudus Last & Manjaji-Matsumoto (Dasyatidae) from coastal waters off Indonesianand Malaysian Borneo and Western Australia, from Himantura uarnak (Gmelin) (Dasyatidae) off Nickol Bay, WesternAustralia and from Rhinoptera neglecta Ogilby (Myliobatidae) off Weipa, Queensland, Australia. This species lacksgland-cells within the tentacular bulbs, one of the most distinctive features of this family. Prochristianella kostadinovae n. sp. is described from the spiral intestines of Himantura uarnak 2 (Dasyatidae) (sensu Naylor et al. 2012) from the Gulfof Carpenteria. It differs from congeners in its metrical data, a metabasal tentacular armature with 10 hooks per principlerow, hooks 1(1’) being uncinate with an elongate base and widely spaced and hooks 4(4’) smaller than neighbouring hooks3(3’) and 5(5’). Prochristianella scholzi n. sp. is described from specimens of the Taeniura lymma species complex(Dasyatidae) (sensu Naylor et al. 2012) from three localities in Malaysian and Indonesian Borneo. This species has arraysof billhooks on the basal swelling, but differs from similar congeners in having very few, tiny gland-cells within thetentacular bulbs and a metabasal tentacular armature with 9–10 hooks per half spiral row and hooks 4(4’) being muchsmaller than the neighbouring hooks 3(3’) and 5(5’). Examinations of new material from northern Australia andIndonesian and Malaysian Borneo provided additional information on Prochristianella aciculata Beveridge & Justine,2010, Prochristianella butlerae Beveridge, 1990 and Prochristianella clarkeae Beveridge, 1990. In total, 17, 7 and 29(respectively) new host records and 14, 9 and 28 (respectively) new locality records are added. These records extend thegeographical range of all three species in the Australasian region and also represents the first record of P. aciculata fromAustralian waters and the first record of P. butlerae from the Indo-Malayan region. Prochristianella clarkeae is the least host specific taxon within Prochristianella, infecting 43 different host species.

A new species of Grillotia, G. gastrica n. sp., is described from the stomach musculature of the teleosts Upeneichthys lineatus (Bloch & Schneider) and Sillaginodes punctatus (Cuvier) from off Perth, Western Australia. The new species most closely resembles G. pristiophori Beveridge & Campbell, 2001 in having six hooks in each principal row of the metabasal tentacular armature but differs in having a smooth scolex tegument and in having a band of hooklets running the entire length of the external surface of the tentacle rather than diminishing in width to a single hooklet as occurs in G. pristiophori. Grillotia heptanchi (Vaullegeard, 1899) is redescribed and the details of the mature segment are described for the first time. Grillotia adenoplusius (Pintner, 1903) is redescribed from the type-specimens and is considered to be the larval stage of G. acanthoscolex Rees, 1944 (syns G. spinosissima Dollfus, 1969 and G. microthrix Dollfus, 1969). The adult of G. adenoplusius is also redescribed based on the types of G. spinosissima. The type-specimens of G. dolichocephala Guiart, 1935 and G. minor Guiart, 1935 were re-examined and G. minor is considered to be a synonym of G. dolichocephala as is G. meteori Palm & Schroder, 2001. Based on an examination of the type-specimens, G. scolecina (Rudolphi, 1819) is treated as a species inquirenda. A list is provided of the species currently placed in Grillotia.

A new genus of trypanorhynch cestodes is described from the brownbanded bambooshark, Chiloscyllium punctatum Muller & Henle (Hemiscylliidae) from off Nickol Bay, Western Australia. Poecilorhynchus perplexus n. g., n. sp. is placed in the Eutetrarhynchidae Guiart, 1927 because it is characterised by an elongate, acraspedote scolex with two oval bothria, the absence of bothrial pits, elongate bulbs, the presence of gland-cells within the bulbs and prebulbar organs, retractor muscles inserting at the base of each bulb and an acraspedote strobila. It can be distinguished from all other genera in this family by its possession of a poeciloacanthous typical armature, with a chainette composed of two longitudinal files of uncinate hooks on the external tentacular surface.

A new genus of trypanorhynch cestodes, Pristiorhynchus n. g. (Otobothrioidea: Otobothriidae), is described from two species of modern sawfishes (Pristidae) from off northern Australia. Pristiorhynchus palmi n. g., n. sp. is characterised by an acraspedote scolex with two bothria, paired bothrial pits on the posterior margins of each bothrium, the absence of gland-cells within the bulbs and prebulbar organs, a retractor muscle inserting at the posterior region of the elongate bulbs, a characteristic basal tentacular armature with dispersed billhooks and a heteroacanthous atypical metabasal armature with five principle and three intercalary hooks. Furthermore, redescriptions are provided for Symbothriorhynchus tigaminacantha Palm, 2004, Parotobothrium balli (Southwell, 1929) and Pseudotobothrium arii (Bilqees & Shaukat, 1976). Observations of adult worms revealed novel information on the segment morphology, which has not been described for these three species. Specimens of Proemotobothrium linstowi (Southwell, 1924), Pr. southwelli Beveridge & Campbell, 2001 and Fossobothrium perplexum Beveridge & Campbell, 2005 collected from elasmobranchs from several sampling localities off Australia revealed additional information on host range and geographical distribution.

Diesingium lomentaceum (Diesing, 1850) Pintner, 1929 is redescribed from specimens from Mustelus mustelus (Linnaeus, 1758) from Senegal, Africa, and the genus rehabilitated. Mustelicola Dollfus, 1969 is considered a synonym of Diesingium Pintner, 1929, and D. lomentaceum is considered very similar to D. woodsholei (Dollfus, 1969) n. comb. D. antarcticus (Campbell & Beveridge, 1988) n. comb. is regarded as a valid species. The redefinition of the family Mustelicolidae Dollfus, 1969 sensu Campbell & Beveridge (1988) includes the features of Diesingium.

A new species of Oncomegas Dollfus, 1929 is described from the cowtail stingray, Pastinachus atrus (Macleay), collected in the Makassar Strait, Indonesian Borneo. Oncomegas trimegacanthus n. sp. possesses 2 oval bothria, gland cells within the bulbs, prebulbar organs, a distinctive basal armature with a single macrohook on the bothrial surface of the asymmetrical basal swelling, and a heteroacanthous, heteromorphous metabasal armature with 10 hooks per principle row. It differs from congeners by its possession of additional enlarged hooks at the base of the tentacle. Because of apparent morphological similarities, we suppress the genus Oncomegoides BeveridgeCampbell, 2005 with Oncomegas, and place the type and only species, Oncomegoides celatus BeveridgeCampbell, 2005 , within Oncomegas as Oncomegas celatus n. comb. Three species of Oncomegas , namely, Oncomegas paulinae Toth, CampbellSchmidt, 1992, Oncomegas australiensis Toth, CampbellSchmidt, 1992, and Oncomegas aetobatidis CampbellBeveridge, 2009, differ from other species, possessing testes posterior to the ovary and a metabasal armature consisting of tiny, relatively homeomorphous hooks, with more than 14 hooks per principle row. Based on these morphological differences, a new genus, Hispidorhynchus n. gen., is erected, with Hispidorhynchus australiensis n. comb. as the type species.