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Astyris axicostata n. sp. Zoobank registration: urn:lsid:zoobank.org:act: 8199E15C-A73 A-4828-AEED-9339C2B42E00 Astyris sp. nov.: Nekhaev et al., 2022: 9, Fig. 4D. Type specimens. Holotype (Fig. 2 A–D) [SL 7.3 mm], MIMB 45730. Three paratypes [SL 7.4, 7.0, and 3.0 mm] (Fig. 2 E–I) MIMB 45731; two paratypes [SL 7.3, and 5.3 mm] IORAS INV0000847. Type locality. Northern summit of submarine Piip Volcano, 55°24.96′N, 167°16.464′E, 373 m, R / V Akademik M.A. Lavrentyev, cruise 82, sta LV82-1/7, 2018, rock with zoantharians (Epizoanthus sp.) and other Hexacorallia. Additional material examined. 28 specimens from the type locality, one sequenced and examined for radular morphology (Buc298, shell partially destroyed). Northern summit of submarine Piip Volcano, 55°24.996′N, 167°16.488′E, 402 m, R / V Akademik M.A. Lavrentyev, cruise 75, sta LV75-10/1, 2016, 1 specimen, rocks on bacterial mats. Southern summit of submarine Piip Volcano 55°22.938′N, 167°15.696′E, 468 m, R / V Akademik M.A. Lavrentyev, cruise 75, sta LV75-15/2, 1 specimen, in vicinity of Calyptogena bed on soft sediment. Etymology. The species epithet refers to characteristic axial ribs (‘costa’, L. ‘rib’). Description (holotype). Shell (Fig. 2A–D) moderate-sized for genus (up to SL 7.4 mm), tall-spired. Apex decollate, leaving 4.5 whorls remaining. Teleoconch whorls evenly rounded, convex, very thin and fragile, semi-transparent, very light yellow. Periostracum very thin, smooth, transparent, and tightly adherent to shell. Spiral sculpture of rather indistinct spiral cordlets slightly varying in width, best pronounced on penultimate whorl (16 on penultimate whorl) and less distinct on last whorl, very obscure on canal. Axial sculpture of very thin but distinct weakly sinuous axial ribs present on all teleoconch whorls, more distinct on penultimate and last whorls, and extending to canal, around 30 on last whorl. Aperture lacking dentition, semi-circular in shape, siphonate. Outer lip simple, not thickened, completely smooth on inside. Columella weakly concave, simple, with slightly thickened narrow callus. Siphonal canal short with weakly constricted but distinct siphonal notch. Operculum corneous, small, irregularly oval, length about half of aperture height. Nucleus lateral. Protoconch persists in one juvenile paratype with SL 3.0 mm (Fig. 2 E–F), paucispiral, of about 1.5 whorls, smooth, diameter 0.75 mm, transition to teleoconch is poorly demarcated by a weak varix. Radula (Fig. 3A) rachiglossan, typical of columbellids with acuspate smooth plate-like central tooth and one lateral tooth on each side. Laterals with narrow bases and three cusps, basal one obtuse and two distal ones sharp and closely spaced. Distribution. Presently known only from both summits of the submarine Piip Volcano (southwestern Bering Sea) at the depths of 373– 468 m. Ecology. Most specimens were collected from a single station on a rock among dense population of Epizoanthus sp. in an area without visible hydrothermal vent activity (Fig. 3 C–D), however two specimens were obtained from the hydrothermal vent habitats in close proximity to Calyptogena beds and bacterial mats. In addition, a study of photographs shows that some molluscs located close to bacterial mats may be A. axicostata n. sp. The value of δ13C of a specimen of A. axicostata n. sp. from a site without bacterial mats indicated prevailing contribution of photosynthetically derived carbon from sinking POM (particulated organic matter) in their nutrition (Kiyashko, Mordukhovich, pers. comm.).. Remarks. The present new species demonstrates little degree of conchological variation. The spiral sculpture can be more distinct in some specimens than in holotype (Fig. 2 F–G). The new species is most similar to A. thermophila, differing in more rounded teleoconch whorls and in the presence of thin but distinct axial ribs. Astyris axicostata n. sp. is attributed to Astyris since it belongs to the same molecularly defined clade as Astyris cf. rosacea, very similar to the type species of the genus. Correspondingly the tentative position of A. thermophila is here confirmed. The radulae of all three studied Astyris species are very similar (Fig. 3), although in A. thermophila the basal cusp of the lateral teeth is more distinct and better defined in comparison with A. axicostata n. sp. and Astyris cf. rosacea . Astyris axicostata n. sp. is the fourth species of the genus recorded from reducing environments and the second species found in hydrothermal vent areas (Table 1). As for the feeding type of A. axicostata n.sp., preliminary data on δ13C indicated organic matter mainly of photosynthetic origin in their diet (Kiyashko, Mordukhovich, pers. comm.). Thus, although found in the area of hydrothermal activity, the species is probably not specific for hydrothermal vents but rather has high tolerance to environmental factors allowing inhabiting areas of hydrothermal activity. Astyris thermophila, so far the only columbellid species of hydrothermal vent community, was found in tubeworm bushes attached on the tubes and in washings of Bathymodiolus mussels. It was suggested that A. thermophila is a predator or ovophagous (Chen et al. 2017). It is not clear whether A. thermophila is a species obligate to the hydrothermal vent habitats, since very similar specimens were recently collected at the methane seeps of the Koryak Slope of Chukotka, western Bering Sea (Nekhaev et al. 2022: 9). We failed in sequencing those specimens and therefore their conspecifity with A. thermophila is not presently confirmed. But it may appear that both A. thermophila and A. axicostata n. sp. can dwell in rather wide types of environments.

Buccinum hasegawai sp. nov. urn:lsid:zoobank.org:act: 2CEE5E56-6C96-445E-91ED-D5E8E30B928F Figs 4, 6A–C; Table 1 Buccinum (Buccinum) bombycinum – Golikov 1980: 327, figs 85, 183, 391, 1 pl. XXXI, 1a–1k (part.) (non Dall 1907). Bathybuccinum (Ovulatibuccinum) bombycinum – Golikov & Sirenko 1988: 87 (non Dall 1907). Bathybuccinum bombycinum – Golikov & Sirenko 1998: 122, fig. 12b; Kantor & Sysoev 2006:160, pl. 74c (non Dall, 1907). ? Buccinum sp. cf. bulimuloideum – Okutani 1964: 414, pl. II fig.12 (non Dall 1907). Bathybuccinum sp.1 — Sirenko et al. 2013:159. Diagnosis Shell reaching 18.5 mm in length, thin, oval to elongate-oval, smooth. Axial sculpture only of thin growth lines, spiral sculpture absent. Operculum thin, small, less than ¼ of AL, with nucleus notably shifted towards lower outer edge. Etymology Named in honour of Dr Kazunori Hasegawa, Japanese malacologist whose studies made a significant contribution to the systematics of the deep-sea gastropods of Japan and the Pacific. Type material Holotype KURILE ISLANDS • lv; South-east of Simushir I.; 46°40.6′ N, 151°58.4′ E; depth 436 m; R/V Akademik Oparin, cruise 56, stn 19; ZIN 62775, Buc274. Paratypes KURILE ISLANDS • 1 lv (paratype 1, SL 14.8 mm); same collection data as for holotype; ZIN 62902, Buc276 • 1 lv (paratype 2, SL 14.7 mm); Okhotsk Sea, Urup I.; 46°15.9′ N, 150°15.4′ E; depth 450–460 m; R/V Oparin, cruise 56, stn 24; MIMB 42300, Buc273 • 8 lv (SL 9.0– 16.2 mm); Iturup I.; 44°20.8′ N, 148°24.0′ E; depth 414 m; Kurile-Sakhalin Expedition, F/T Toporok, stn 101; 14 Sep 1949; ZIN 26228 • 7 lv; Iturup I.; 44°52′ N, 149°27.7′ E; depth 910–920 m; R/V Odyssey; 25 Jul. 1984; ZIN 48100. Other material examined Sequenced material Holotype, paratypes 1, 2 (see above on localities). Not-sequenced material KURILE ISLANDS • 1 lv (SL 16.5 mm); Shikotan I.; 43°37′ N, 147°19′ E; depth 400 m; R/V Tikhookeanskyi; 11 Jul. 1987; ZIN 62780 • 1 lv (SL 16.0 mm); Iturup I.; 44°05.7′ N, 148°05.4′ E; depth 500 m; R/V Tikhookeanskiy; 10 Aug. 1987; ZIN 62779. SEA OF OKHOTSK • 3 lv (SL 15.0–16.0 mm); Southern Sakhalin, 47°50.4′ N, 142°53.5′ E; depth 78 m; Kurile-Sakhalin Expedition; F/T Toporok; stn 145; 30 Sep.–1 Oct. 1949; ZIN 26226. Description MEASUREMENTS (holotype, largest specimen). SL 18.5 mm, AL 9.2 mm, SW 8.6 mm. SHELL. Thin, fragile, oval to elongate-oval, smooth, with short siphonal canal, chocolate-brown in fresh specimens to brownish and olive with lighter convex strongly demarcated fasciole. Protoconch eroded in available material, rendering exact whorl count impossible. Teleoconch whorls up to 4+. Suture distinct, adpressed at periphery of previous whorl. SW/SL ratio 0.48 (holotype) to 0.58, LW/SL ratio 0.75 (holotype) to 0.84. Axial sculpture of thin prosocline growth lines, spiral sculpture absent. Aperture large, semi-oval. Outer lip thin, slightly pressed adapically. Columella smooth, nearly straight, sometimes weakly concave, lighter than shell. AL/SL ratio 0.51 (holotype) to 0.63. Siphonal notch wide and rather shallow. Periostracum very thin, smooth, tightly adhering. Operculum (Fig. 6B) small, thin, yellowish, transparent, oval, with nucleus strongly displaced to lower edge, spanning about 0.25 of AL. RADULA (n = 1). Rachidian tooth with rectangular basal plate and three equal, short cusps. Lateral tooth with three cusps, outer cusp longest, intermediate shortest and most narrow (Fig. 6A). PENIS (n = 1). Distal part with large hook-shaped papilla, surrounded by circular fold (Fig. 6C). HEAD- FOOT. Characteristically strongly pigmented on the dorsal side, nearly black in fresh specimens, fading with time in alcohol. Remarks The species is variable in shell shape and coloration (Fig. 4). The shell can range from oval, with a protruded basal edge of the outer apertural lip (Fig. 4E, G) to narrowly oval with non-protruded lip (Fig. 4A–D). Shell color varies from brown to olive, although it is possible that the color fades over time in alcohol, since lightest shells were collected in 1949, while most dark specimens were collected in 2019. The size of the operculum varies significantly, constituting from 1 / 6 to ¼ of AL. Golikov (1980) identified this species (together with B. bizikovi sp. nov.) as Buccinum bombycinum based on Dall’s (1907) incorrect report of the type locality for this species (east coast of Sakhalin, in 53 m). However, it turned out that the type locality was Suruga Bay, Japan in 527 m (Kuroda 1950; Hasegawa & Okutani 2011). Later, when examining the samples in which both new species were sympatric, Golikov & Sirenko (1998) recognized the presence of two species and identified the specimens with a narrow shell as Bathybuccinum bombycinum, and those with a wider shell (B. bizikovi sp. nov.) as B. ovulum. Kantor & Sysoev (2006: 160) pointed out that the specimens identified as B. bombycinum by Golikov and Golikov & Sirenko belong to a different, possibly undescribed species. The new species is clearly different from Buccinum bombycinum (Fig. 4H–I) in having a much narrower, smooth shell with a smaller operculum. Furthermore, in B. bombycinum the upper whorls bear distinct spiral cords (Fig. 4I). Hasegawa & Okutani (2011: fig. 26) illustrated a specimen of B. bombycinum from Sagami Bay with even better developed spiral sculpture, covering the entire shell surface. B. bombycinum is probably endemic of Honshu. For the comparison with B. bizikovi sp. nov. see under remarks of the latter species. In the molecular phylogeny, the new species is clustering with maximal support with two morphologically very different species, Buccinum sp. 1 and Buccinum sp. 2. From the former (Fig. 2I) it differs in much narrower shell and absence of the distinct spiral keel on the shoulder. From the latter (Fig. 2C) the new species differs in much narrower shell, higher spire, lack of spiral cords, and smooth and thin periostracum vs thick and leathery one. Distribution Kurile Is (Iturup I., Shikotan I., Simushir I.), Sea of Okhotsk, South Sakhalin, depth 78– 910 m.

Buccinum bizikovi sp. nov. urn:lsid:zoobank.org:act: A6137049-7001-4443-AFF1-044DE0E0D832 Figs 5, 6D–F Buccinum (Buccinum) bombycinum – Golikov 1980: 327, figs 85, 183, 391, 1 pl. XXXI, 1a–1k (part.) (non Dall 1907). Bathybuccinum (Ovulatibuccinum) ovulum – Golikov & Sirenko 1988: 93, figs 13–15 (non Dall, 1895). Bathybuccinum ovulum – Golikov & Sirenko 1998: 122, fig. 12c; Kantor & Sysoev 2006: 160, pl. 74i (non Dall, 1895). Bathybuccinum bombycinum – Kantor & Sysoev 2006: pl. 74d (non Dall 1907). Bathybuccinum sp. 2 — Sirenko et al. 2013:159. Diagnosis Shell reaching 29.5 mm in length, thin, broadly oval, smooth except inconspicuous, irregularly spaced, sometimes oblique spiral cords. Axial sculpture only of thin growth lines. Operculum thin, small, less than 1/ 5 of AL, brown, with terminal nucleus notably shifted to lower outer operculum edge. Etymology Named in honour of Vyacheslav Bizikov, Soviet and Russian malacologist, who collected deep-water gastropods, including this species, near the Kurile Islands. Type material Holotype KURILE ISLANDS • lv; Iturup I., 44°20.8′ N, 148°24.0′ E; depth 414 m; Kurile-Sakhalin Expedition, F/T Toporok, stn 101; 14 Sep. 1949; ZIN 62781. Paratypes KURILE ISLANDS • 4 lv; same collection data as for holotype; ZIN 62782. Other material examined KURILE ISLANDS • 1 lv (SL 19.1 mm); Shikotan I.; 44°08.1′ N, 147°57.0′ E; depth 285–286 m; Kurile-Sakhalin Expedition, F/T Toporok, stn 93; 13 Sep. 1949; ZIN 62788 • 1 lv (SL 16.9 mm); Iturup I.; 44°58.2′ N, 149°19.0′ E; depth 605–620 m; R/V Odyssey; 25 Jul. 1984; ZIN 48103 • 1 lv (SL 18.0 mm); Simushir I.; depth 450–480 m; R/V Odyssey; 30 Dec. 1984; ZIN 62787 • 1 lv (SL 29.5 mm); Polonskogo I.; 43°19′ N, 146°37′ E; depth 500 m; R/V Tikhookeanskiy, stn 10, sample 26; 9 Jul. 1987; ZIN 62785 • 1 lv (SL 14.0 mm); Shikotan I.; 43°37′ N, 147°19′ E; depth 400 m; R/V Tikhookeanskiy; 11 Jul. 1987; ZIN 62783 • 1 lv (SL 18.0 mm); Iturup I.; 44°49.5′ N, 149°01.7′ E; depth 650 m; R/V Tikhookeanskiy; 13.08.1987; ZIN 62786. SEA OF OKHOTSK • 3 lv (SL 15.0– 23.1 mm); South-eastern Sakhalin, 47°50.4′ N, 142°53.5′ E; depth 78 m; Kurile-Sakhalin Expedition; F/T Toporok; stn 145; 30 Sep.–1 Oct. 1949; ZIN 62783. Description MEASUREMENTS (holotype). SL 20.0 mm, AL 13.6 mm, SW 13.1 mm. Largest available specimen attains 29.5 mm. SHELL. Thin, fragile, oval, smooth, with short siphonal canal, pale-brownish to rose- brownish. Protoconch of about 1.5 low, convex whorls, strongly eroded. Teleoconch whorls 3+, suture distinct, adpressed at periphery of previous whorl. SW/SL ratio 0.62–0.67 (0.65 in holotype), LW/SL ratio 0.80–0.81 (0.80 in holotype). Axial sculpture of thin, weakly prosocline growth lines. Spiral sculpture of low, indistinct irregularly spaced, sometimes oblique cords.Aperture large, semi-oval. Outer lip thin, slightly adpressed adapically. Columella straight, smooth. Siphonal notch wide and rather shallow. AL/SL ratio 0.64–0.70 (0.68 in holotype). Periostracum thin, smooth, yellowish brown. Operculum (Fig. 6E) small, spanning less than 0.25 of AL, thin, brownish, translucent, oval, with nucleus shifted to lower edge,. RADULA (n = 1). Rachidian tooth with broad rectangular basal plate and five short cusps nearly equal in length. Lateral tooth with three cusps, outer cusp longest, intermediate shortest and most narrow (Fig. 6D). PENIS (n = 1). Distal end of the penis with cone-shaped papilla, surrounded by circular fold (Fig. 6F). Remarks Specimens of this new species were previously identified as Buccinum bombycinum (Golikov 1980) or Bathybuccinum ovulum (Golikov & Sirenko 1988, 1998). Kantor & Sysoev (2006) suggested that the specimens, identified by Golikov & Sirenko are not conspecific with B. ovulum. The new species differs from B. ovulum (Fig. 5G) in having a higher spire (LW/SL ratio is 0.92 in B. ovulum vs 0.80–0.81 in B. bizikovi) and a smaller operculum (less than 0.25 of AL in B. bizikovi and typically around 0.4 in B. ovulum) with nucleus situated much closer to the edge. The new species differs from B. hasegawai in having a broader shell (SW/SL ratio 0.48–0.58 in B. hasegawai and 0.62–0.67 in B. bizikovi) and a lower aperture (AL/SL ratio 0.51–0.63 in B. hasegawai and 0.64–0.70 in B. bizikovi). Buccinum ovulum sensu Golikov & Sirenko 1988 (non Dall 1907) was designated as the type species of Bathybuccinum (Ovulatibuccinum). Therefore, it is a case of misidentified type species and it is now fixed (under Article 70.3 of the Code) as Buccinum bizikovi sp. nov. misidentified as Buccinum ovulum Dall, 1907 in the original designation by Golikov & Sirenko (1988). Distribution Kurile Islands: Simushir, Iturup, Shikotan and Polonskogo Islands, depth 285–650 m; Okhotsk Sea, south-eastern Sakhalin, depth 78 m., Published as part of Kantor, Yuri, Sirenko, Boris, Zvonareva, Sofya S. & Fedosov, Alexander, 2022, Taxonomic status of genera of Buccininae (Neogastropoda, Buccinidae) updated based on molecular data with description of new species and corrections of nomenclature of Buccinum, pp. 11-34 in European Journal of Taxonomy 817 on pages 24-28, DOI: 10.5852/ejt.2022.817.1759, http://zenodo.org/record/6518035, {"references":["Golikov A. N. 1980. Molluscs Buccininae of the World Ocean. Fauna of USSR, Mollusks 5 (2). Nauka Publ., Leningrad.","Golikov A. N. & Sirenko B. I. 1988. New data on the systematics of the subfamily Buccininae (Gastropoda, Pectinibranchia, Bucciniformis). Trudy Zoologicheskogo Instituta Academii Nauk SSSR 187: 85 - 104.","Golikov A. N. & Sirenko B. I. 1998. Prosobranch gastropods of the continental slope of the Kurile Islands. Ruthenica, Russian Malacological Journal 8 (2): 1 - 45.","Kantor Y. & Sysoev A. V. 2006. Marine and brackish water Gastropoda of Russia and Adjacent Countries: An Illustrated Catalogue. KMK Scientific Press Ltd., Moscow.","Sirenko B. I. (ed.) 2013. Check-list of species of free-living invertebrates of the Russian Far Eastern seas. Explorations of the fauna of the seas 75 (83). Zoological Institute of RAS."]}

Buccinum chinoi nom. nov. Fig. 2G; Table 1 Ovulatibuccinum perlatum – Fraussen & Chino, 2009: 152, 154, figs. 7–8, 17–18. — Hasegawa 2009: 289, fig. 183. Etymology Named in honour of Mr Mitsuo Chino, citizen scientist in malacology, who co-authored the description of Ovulatibuccinum perlatum. Type material Holotype JAPAN • lv (SL 8.4 mm); northeastern Honshu, off Iwate Prefecture; depth 900–1000 m; NSMT-Mo 76771. Distribution Known from the slope of the Japan Trench (type locality), off northeastern Honshu (350–480 m; Hasegawa 2009) and Kurile-Kamchatka Trench. Bathymetric range: the lower continental plateau from 300 m down to abyssal depth of at least 2700 m. Inhabiting muddy and silty bottoms (after Fraussen & Chino, 2009). Remarks After synonimization of Ovulatibuccinum with Buccinum the new combination Buccinum perlatum (Fraussen & Chino, 2009) is becoming the junior secondary homonym of Buccinum perlatum Conrad, 1833 and Buccinum perlatum Küster, 1858 (= Engina natalensis Melvill, 1895). Since there is no known available and potentially valid synonym, according to art. 60.3 of ICZN the name Buccinum perlatum must be replaced by a new substitute name proposed herein.

Buccinum golikovi nom. nov. Buccinum coronatum Golikov, 1980: 359–360, fig. 407 (2) pl. 34 (2a, 2b). — Kantor & Sysoev 2006:163, pl. 76b (holotype). Etymology Named in honour of late Dr Alexander Golikov, outstanding Soviet and Russian malacologist who among other works produced a comprehensive revision of Buccinum. Type material Holotype NEWFOUNDLAND BANK • lv (SL 42.2 mm); ZIN 26156/1. Distribution Newfoundland Bank, western Laptev Sea; depth 46–55 m (Golikov 1980). Remarks The name Buccinum coronatum Golikov, 1980 is a junior primary homonym of Buccinum coronatum Bruguière, 1789 [= Nassarius coronatus (Bruguière, 1789)], Buccinum coronatum Quoy & Gaimard, 1833 [= Nassarius distortus (A. Adams, 1852)] and Buccinum coronatum Gmelin, 1791 [= Nassa serta (Bruguière, 1789)]. Since there is no known available and potentially valid synonym, according to art. 60.3 of ICZN the name Buccinum coronatum Golikov, 1980 must be replaced by a new substitute name proposed herein., Published as part of Kantor, Yuri, Sirenko, Boris, Zvonareva, Sofya S. & Fedosov, Alexander, 2022, Taxonomic status of genera of Buccininae (Neogastropoda, Buccinidae) updated based on molecular data with description of new species and corrections of nomenclature of Buccinum, pp. 11-34 in European Journal of Taxonomy 817 on pages 28-29, DOI: 10.5852/ejt.2022.817.1759, http://zenodo.org/record/6518035, {"references":["Golikov A. N. 1980. Molluscs Buccininae of the World Ocean. Fauna of USSR, Mollusks 5 (2). Nauka Publ., Leningrad.","Kantor Y. & Sysoev A. V. 2006. Marine and brackish water Gastropoda of Russia and Adjacent Countries: An Illustrated Catalogue. KMK Scientific Press Ltd., Moscow."]}

Genus Buccinum Linnaeus, 1758 Buccinum (Thysanobuccinum) Golikov & Gulbin in Golikov, 1980, syn. nov. Bathybuccinum Golikov & Sirenko, 1988. Bathybuccinum (Ovulatibuccinum) Golikov & Sirenko, 1988, syn. nov., Published as part of Kantor, Yuri, Sirenko, Boris, Zvonareva, Sofya S. & Fedosov, Alexander, 2022, Taxonomic status of genera of Buccininae (Neogastropoda, Buccinidae) updated based on molecular data with description of new species and corrections of nomenclature of Buccinum, pp. 11-34 in European Journal of Taxonomy 817 on page 21, DOI: 10.5852/ejt.2022.817.1759, http://zenodo.org/record/6518035, {"references":["Golikov A. N. 1980. Molluscs Buccininae of the World Ocean. Fauna of USSR, Mollusks 5 (2). Nauka Publ., Leningrad.","Golikov A. N. & Sirenko B. I. 1988. New data on the systematics of the subfamily Buccininae (Gastropoda, Pectinibranchia, Bucciniformis). Trudy Zoologicheskogo Instituta Academii Nauk SSSR 187: 85 - 104."]}

FAMILY COLIDAE GRAY, 1857 (NEW RANK) (FIGS 5F���L, 6D) Type genus: Colus R��ding, 1798., Published as part of Kantor, Yuri I., Fedosov, Alexander E., Kosyan, Alisa R., Puillandre, Nicolas, Sorokin, Pavel A., Kano, Yasunori, Clark, Roger & Bouchet, Philippe, 2022, Molecular phylogeny and revised classification of the Buccinoidea (Neogastropoda), pp. 789-857 in Zoological Journal of the Linnean Society 194 on page 806, {"references":["Gray JE. 1857. Guide to the systematic distribution of Mollusca in the British Museum. Part I. London: Taylor & Francis.","Roding PF. 1798. Museum Boltenianum ..., Pars secunda continens conchylia sive testacea univalvia, bivalvia & multivalvia. Hamburg: Christ."]}

FAMILY PRODOTIIDAE FAM. NOV. (FIGS 19, 20C–F) Type genus: Prodotia Dall, 1924.

FAMILY PROSIPHONIDAE POWELL, 1951 (NEW RANK) (FIGS 8, 9) Type genus: Prosipho Thiele, 1912., Published as part of Kantor, Yuri I., Fedosov, Alexander E., Kosyan, Alisa R., Puillandre, Nicolas, Sorokin, Pavel A., Kano, Yasunori, Clark, Roger & Bouchet, Philippe, 2022, Molecular phylogeny and revised classification of the Buccinoidea (Neogastropoda), pp. 789-857 in Zoological Journal of the Linnean Society 194 on page 811, {"references":["Powell AWB. 1951. Antarctic. and Subantarctic Mollusca: Pelecypoda and Gastropoda. Discovery Reports 26: 47 - 196, pls 5 - 10.","Thiele J. 1912. Die antarktischen Schnecken und Muscheln. Deutschen Sudpolar-Expedition 1901 - 1903 13: 183 - 285, pls 11 - 19."]}

FAMILY BELOMITRIDAE KANTOR ET AL., 2012 (FIGS 3F, G, 4D���F) Type genus: Belomitra P.Fischer, 1883., Published as part of Kantor, Yuri I., Fedosov, Alexander E., Kosyan, Alisa R., Puillandre, Nicolas, Sorokin, Pavel A., Kano, Yasunori, Clark, Roger & Bouchet, Philippe, 2022, Molecular phylogeny and revised classification of the Buccinoidea (Neogastropoda), pp. 789-857 in Zoological Journal of the Linnean Society 194 on page 803

FAMILY EOSIPHONIDAE FAM. NOV. (FIGS 6E–L, 7) Type genus: Eosipho Thiele, 1929.

SUBFAMILY TOMLINIINAE SUBFAM. NOV. Type genus: Tomlinia Peile, 1937., Published as part of Kantor, Yuri I., Fedosov, Alexander E., Kosyan, Alisa R., Puillandre, Nicolas, Sorokin, Pavel A., Kano, Yasunori, Clark, Roger & Bouchet, Philippe, 2022, Molecular phylogeny and revised classification of the Buccinoidea (Neogastropoda), pp. 789-857 in Zoological Journal of the Linnean Society 194 on page 846