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Genus Astyris H. Adams & A. Adams, 1853 Type species: Buccinum rosaceum Gould, 1840; subsequent designation, Fischer (1887: 638).

Astyris atacamensis new species Fig. 1 Type material. Holotype: SBNHM 460092 (H: 10.6, D: 6.7 and LW: 8.3 mm); paratypes: SBNHM 460093 (1 specimen), MPCCL 0 1062016 (4 specimens), MZUC 37641 (4 specimens), MNHNCL 202493 (7 specimens); all from the type locality. Type locality. 20 km NW off Huasco (28��14'93'' S; 71��17'50'' W, 404���409 m), Regi��n de Atacama, northern Chile. Leg. Ricardo Catal��n, February 3, 2000. Etymology. The specific name of Astyris atacamensis refers to presence of this species on the continental shelf of the Regi��n de Atacama, northern Chile. Diagnosis. Shell small (up to 11.1 mm long), thick, stout, with 4 to 5 rounded and slightly angulated whorls, often decollate; with sculpture of fine growth lines; spiral sculpture of very fine spiral grooves most noticeable on base of shell. Aperture wide, oval; outer lip sharp, in mature specimens with minute internal lirae; siphonal canal broad and straight. Description. Shell small (H 5.8 to 11.1 mm), thick, stout, with 4 to 5 weakly convex whorls; outline conic; sutures impressed. Measurements from fifty randomly chosen specimens: H 5.8���8.3��� 11.1 mm, D 3.5���5.3��� 7.1 mm, and height of last whorl 4.5���6.5��� 8.7 mm (minimum���average���maximum). Taking into account that most of the shells had the first whorls eroded, we could observe at most 5 whorls in the better preserved shells, with a bit over 4 whorls remaining in most specimens. Colour pale tan; earlier whorls slightly paler, showing indistinct spiral bands. Spire short, decollate, about two-fifths of total height; spire angle a bit less than 45��. Protoconch and early whorls eroded. Teleoconch smooth and slightly glossy, except for fine, irregular axial growth lines crossed by spiral sculpture of very fine, barely visible grooves; grooves cover almost entire exterior surface, coarsest and most noticeable on base. Last whorl large, about three-fourths of shell height, slightly convex, angulated near the base, concave below; maximum width at about one third from anterior end. Aperture prosocline, oval, slightly rectangular, posteriorly acuminate; aperture height slightly more than half of shell height. Parietal callus slightly thickened, concave. Outer lip sharp, simple, outline weakly convex, weakly concave over upper third, then swinging forwards weakly to suture; about 8 to 12 lirae inside outer lip; columella without denticles, callous. Siphonal canal short, very wide, anteriorly with rounded siphonal aperture. Distribution and habitat. Shells of this species (no live specimens) were found in greenish mud, from soft bottoms off Puerto Flamenco (28��14'93'' S; 71��17'50'' W), Regi��n de Atacama to off Tongoy (30��11'36''S; 71��33'25''W), Regi��n de Coquimbo, Chile, from depths of 180 to 470 m. A single specimen, recently collected from sediments of the Bah��a Inglesa Formation (Miocene to Pliocene) at Quebrada Blanca (27��03���55��� S; 70��47���30��� W), near Caldera, Chile may represent the oldest record for this species (Nielsen et al., unpublished). Remarks. All of the specimens examined have the apex eroded to varying degrees, all of them lacking the protoconch and part of the earlier whorls. The definite generic assignment is thus still preliminary, but they agree partially with the description given by Garcia (2009) for Astyris. The distinctive broad shell shape, with a wide siphonal canal, is quite distinctive and different from all the other known columbellid species from the southeastern Pacific. Astyris atacamensis sp. n. is similar in shell characters only to Astyris permodesta (Dall, 1890), a species described from deep water in the northeastern Pacific (Dall, 1890, Thorsson 2002). The new species differs from A. permodesta (Fig. 2) in shell shape (slightly angulated versus convex whorls), with a last whorl slightly concave in A. atacamensis and compressed below in A. permodesta (producing a differentiated/protruding siphonal canal in this species); in the thickness of shell and lip (thin in A. permodesta and thick in A. atacamensis; most visible at the upper end of outer lip), a slightly different aperture outline (product of the more convex last whorl in A. permodesta, slightly angulated in the new species), a thick columella (not callous in A. permodesta), in the presence of lirae in the interior border of the outer lip in the new species (absent in A. permodesta) and, particularly, in having a broader and less constricted siphonal canal, with a more pronounced columellar fold in the new species (absent in A. permodesta). Furthermore, the habitat of the new species also seems to differ from that of Astyris permodesta, which is unusual in that it has been described from reducing environments, recorded along with species of large vesicomyid bivalves of the genus Calyptogena Dall, 1891 (McLean, 1996). This new species thus represents the first record in Chile of the genus Astyris, previously unknown from the southeastern Pacific. Further sediment sampling in the area will probably reveal more molluscan species to be discovered and described, particularly micromollusks, as described by Araya & Geiger (2013)., Published as part of Araya, Juan Francisco, Catal��n, Ricardo & Aliaga, Juan Antonio, 2016, A new deep-water Astyris species (Buccinoidea: Columbellidae) from the southeastern Pacific in Zootaxa 4139 (1), DOI: 10.11646/zootaxa.4139.1.11, http://zenodo.org/record/263488, {"references":["Garcia, E. F. (2009) A new Astyris species (Gastropoda: Columbellidae) from the Gulf of Mexico, with notes on the genus. Novapex, 10 (1), 5 - 8","Dall, W. H. (1890) Scientific results of explorations by steamer Albatross No. VII. Preliminary report on the collection of mollusca and brachiopoda obtained in 1887 - ' 88. Proceedings of the United States National Museum, 12, 219 - 362. http: // dx. doi. org / 10.5479 / si. 00963801.12 - 773.219","McLean, J. H., Gosliner, T. M., Scott, P. H., Blake, J. A. & Lissner, A. L. (1996) Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. Vol. 9. The Mollusca. Part 2: The Gastropoda. Santa Barbara Museum of Natural History, Santa Barbara, 219 pp.","Araya, J. F. & Geiger, D. L. (2013) Cornisepta guzmani n. sp.: first species of genus confirmed from Pacific cold seep environments off central Chile (Gastropoda: Vetigastropoda: Fissurellidae). Nautilus, 127, 115 - 118."]}

Araya, Juan Francisco, Aliaga, Juan Antonio (2015): A new species of Lilloiconcha Weyrauch, 1965 (Pulmonata: Charopidae) from central Chile. Zootaxa 4007 (2): 295-297, DOI: http://dx.doi.org/10.11646/zootaxa.4007.2.13

Lilloiconcha lopezi new species Figs. 1 A��� 1 E. Diagnosis. Shell small, trochoid, slightly wider than high, with elevated spire; nearly five whorls, colored in bands of translucent caramel brown and white. Protoconch with 1.5 whorls, smooth. Teleoconch with about one hundred prosocline ribs (about 23 on last whorl), interspersed with many fine riblets; aperture circular, umbilicus ample and well developed. Description. Shell small (measuring up to 3.8 mm in width), trochoid, spire slightly elevated, shell height about 0.4 of shell width; with five and a half to six convex whorls. Protoconch clearly differentiated from teleoconch; of about one and a half whorls; almost smooth, sculptured only with very faint spiral threads, most noticeable near the sutures. Teleoconch of about four and a half whorls, sculptured with 96 to 104 prosocline coarse axial ribs, 21���24 of them on last whorl, with interspaces filled by about 15 to 21 slightly raised riblets; very faint irregular nodulae at their intersection with vestigial spiral threads, noticeable especially towards the sutures; suture deep and well-marked; aperture 0.4 of shell height, oval to almost circular; lip simple, callus a mere glaze; umbilicus very ample, deep, of about 0.3���0.4 of shell width; periostracum thin, projecting on the most prominent axial ribs; shell colored with alternating axial bands of translucent caramel brown and white. Animal unknown. Type material. Holotype: SBNHM 456358, paratypes: SBNHM 452239 (3 specimens), MPCCL 0 1572015 (2 specimens). All the material collected at the type locality by J. F. Araya & C. L��pez, 0 3 th February 2014. Type locality. Los Molles (32 �� 14 ��� S; 71 �� 31 ��� W, 31 m), Commune of La Ligua, Region of Valpara��so, central Chile. Distribution and habitat. Only known from the type locality; the shells were found buried in humus and underneath stones, large boulders and rotten leaves. Etymology. Named in honor of our friend Christian L��pez (Santiago, Chile). Remarks. The relationship of the new species with presumptive congeneric species from elsewhere in South America is still unknown; unfortunately all of the material consists only of empty shells and the diagnostic aspects of the anatomy, especially that of the penis, epiphallus and marginal radular teeth, are unknown. Hausdorf (2005) noted that although the protoconch of species in the genus appear to be smooth, it has spiral microsculpture when viewed in detail. This characteristic is apparent in the detail of the unworn sections of Fig. 1 E for the new species. Lilloiconcha lopezi is one of the largest species within the genus Lilloiconcha Thiele, 1927; among the congeneric species, only the Brazilian Lilloiconcha superba (Weyrauch, 1965) can be compared with the new species in size or morphometry; however it differs from Lilloiconcha lopezi in having a more elongated shell, with more whorls, less axial ribs (70 in L. superba and about a hundred in the new species) and a much smaller umbilicus (Miquel et al. 2007). Lilloiconcha tucumana Hylton Scott 1963, the type species of the genus, found in Tucum��n, Horco Molle, northern Argentina, has a higher but comparatively smaller and much narrower shell, with more whorls (Fern��ndez & Castellanos 1973). The new species differs from Lilloiconcha aysensis Miquel & Barker, 2009 ���the only other Chilean species in the genus, described from Puerto Chacabuco, Ays��n, about 1470 km from Los Molles���in having a much larger shell with a higher profile, sculptured with fewer and smaller axial ribs and in having an oval to almost circular aperture (which is subcircular and narrower in L. aysensis). This new species thus extends the distribution in Chile of the genus Lilloiconcha, previously known from the southern regions, to Los Molles, central Chile. Advancing our knowledge of the terrestrial malacological fauna in Chile is of high conservation importance given the ongoing increase in the introduction (or recognition) of nonindigenous or invasive land snails to the country, some of them a direct threat to micromollusks (Araya 2015). Further sampling in northern or central Chile will probably reveal more snail species to be discovered and described., Published as part of Araya, Juan Francisco & Aliaga, Juan Antonio, 2015, A new species of Lilloiconcha Weyrauch, 1965 (Pulmonata: Charopidae) from central Chile, pp. 295-297 in Zootaxa 4007 (2) on pages 295-296, DOI: 10.11646/zootaxa.4007.2.13, http://zenodo.org/record/243858, {"references":["Hausdorf, B. (2005) The genus Lilloiconcha in Colombia (Gastropoda: Charopidae). Journal of Natural History, 39, 2795 - 2808. http: // dx. doi. org / 10.1080 / 00222930500145057","Fernandez, D. & de Castellanos, Z. (1973) Clave generica de la malacofauna terrestre argentina. Revista del Museo de la Plata (Nueva Serie), Seccion Zoologia, XI, 265 - 285.","Miquel, S. E. & Barker, G. M. (2009) New Charopidae from Chilean-Argentine Patagonia (Mollusca: Gastropoda: Stylommatophora). Archiv fur Molluskenkunde: International Journal of Malacology, 138, 53 - 61. http: // dx. doi. org / 10.1127 / arch. moll / 0003 - 9284 / 138 / 053 - 061","Araya, J. F. (2015) Current Status of the Non-Indigenous molluscs in Chile, with the first record of Otala punctata (Muller, 1774) (Gastropoda, Helicidae) in the country and new records for Cornu aspersum (Muller, 1774) and Deroceras laeve (Muller, 1774). Journal of Natural History, 49, 1731 - 1761. http: // dx. doi. org / 10.1080 / 00222933.2015.1006703"]}