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K. Fraussen Two new Buccinidae NOVAPEX 5 (2-3): 85-89, 10juil. 2004 Two new deep water Buccinidae (Gastropoda) from western Pacific Koen FRAUSSEN Leuvensestraat 25, B-3200 Aarschot, Belgium [email protected] KEYWORDS. Gastropoda, Buccinidae, Manaria,Nassaria, new taxa, Taiwan South China , Sea, Helen Bank. ABSTRACT: The genusNassaria Link, 1807 comprises a small numberofshallowto moderately deep-water (upper continental shelf) species, restricted to the tropical Indo-West Pacific. To this fauna is added a deep-water species with peculiar spiny sculpture: Nassaria cirsiumoides sp. nov. (southem South China Sea). The genus Manaria Smith, 1906 comprises a number ofdeep-water buccinids characterized by a slender shape, a strong spiral sculpture usually with altemating strong and weak cords, a ratherweak axial sculpture, in combination with a paucispiral protoconch and a thick velvety periostracum. Manaria callophorella sp. nov. (southem South China Sea) is characterized by a rather pagodoid shape, its generic placement is based only on strong resemblance ofshell morphology. INTRODUCTION Nassariacirsiumoides sp. nov. Figs 1-4, 11-12 Bouchet and Warén (1986) revised the known buccinid deep water species from the Indo-West Material examined. Holotype, between Taiwan and Pacific, their study was based on material from Japan, 30.4 mm, MNHN. scientific expéditions. The description of two new Paratype 1, 29.6 mm, between Taiwan and Japan, KF species in the présent work is based on material nr. 2458. trawled by commercial vessels (schrimpers) from Paratype 2, 27.8 mm, idem., KF nr. 4118. Russia (trawled on Helen Bank, South China Sea) and Paratype 3, 30.5 mm, idem., KBIN nr. 30.188. Japan (trawled between north east Taiwan and Japan, Paratype4, 31.4 mm, South China Sea, KF nr. 3137. South China Sea). Type locality. Between Taiwan and Japan, 800-900 m deep, trawled by fisherman from Kyushu, Japan. Abbreviations JCH: collectionJens & ChristaHemmen, Germany Range and habitat. Known from 800-900 m deep in the southem South China Sea, between Japan and KBIN-IRSNB: Koninklijk Belgisch Instituut voor Taiwan. Exact data are not available, but most Natuurwetenschappen - Institut royal des Sciences probably alongNansei-Shoto ridge. naturelles de Belgique, Brussels, Belgium. KF: collection Koen Fraussen, Belgium mm MNHN: Muséum national d'Histoire naturelle, Paris, Description. Shell up to 31.1 in length, thin but solid, semi-transparent, snow-white. Shape semi- France pagodoid with 6 slightly inflatedteleoconch whorls. SYSTEMATICS Protoconch paucispiral, consisting of 3/4 to 1 whorl, diameter 1.6 mm. Transition to teleoconch marked by 3 or 4 weak broad axial ribs covering about 1/3 - 1/4 Family BUCCINIDAE Rafinesque, 1815 whorl. GenusNassaria Link, 1807 First teleoconch whorl with 4 or 5 high, sharp spiral Nassaria Link, 1807: 123. Type speciesby subséquent cords, interspaces broad, subsutural cord separated by désignation (Eames, 1952): Nassaria lyrata Link, broader interspace. Second whorl more angulate, 1807, a junior synonym ofNeptunea pusilla Rôding, subsutural cord still fine, other cords stronger; middle 1798. ones accentuated by shoulder, forming strong, slightly bicarinate carina, separated from subsutural cord by For a detailed discussion of the synonymy and the increasingly broader interspace which form a confusing nomenclatorial history ofNassaria I referto subsutural slope. From third whorl on, 3 or 4 Cemohorsky (1981: 3-4). additional spiral cords occur on subsutural slope between subsutural cord and bicarinate shoulder. 85 K. Fraussen Two new Buccinidae NOVAPEX 5 (2-3): 85-89, 10juil. 2004 Secondary spiral threads appear between abapical Type locality. Between Taiwan and Japan, 800-900 m cords from third whorl on, additional cords on deep, trawledbyfisherman from Kyushu, Japan. subsutural slope from penultimate whorl on. Body whorl with 23 or24 spiral cords, ofwhich about 12 on Range and habitat. Known from 500-900 m deep in siphonal canal. the southem South China Sea. Between Japan and First teleoconch whorl with 12 or 13 (rarely 14) Taiwan, most probably along the Nansei-Shoto ridge, m strong, broad axial ribs, running from suture to suture. 800-900 deep. The spécimen from Helen Bank m Interspaces narrow on firstwhorl, increasinglybroader lived 500 deep, on mud. from second or third whorl on. On fourth whorl axial mm ribs on shoulder only, accentuating 2 spiral cords, Description. Shell small, 19.2 to 21.7 in length, resulting in bicarinate carina. Body whorl with 17 thick, solid, snow-white, rather duU. Shape semi- weak axial ribs on shoulder. pagodoid with 5-5 1/2 inflated, angulate teleoconch Aperture ovate, aperture and siphonal canal about 1/2 whorls. total shell length. Outer lip rather thick, edge callous, Protoconch paucispiral, consisting of about 1 whorl, 16-23 lirae within, according with extemal smooth, covered with miniscule holes, diameter 1.35 - interspaces. Columella slightly curved, callus 1.45 mm. Transition to teleoconch marked by 1 or 2 moderately thick, smooth. Siphonal canal short, weak axial ribs. twisted, narrow, open. First teleoconch whorl with 5 spiral cords, interspaces Periostracum, radulaandoperculum unknown. ofequal size. Second whorl with 7 spiral cords, their number increasing to 11 or 12 on penultimate whorl. Remarks.Nassaria cirsiumoides sp. nov. is apeculiar Body whorl with 32-34 spiral cords ofwhich about 20 species, différent from ail other known Récent and coveringthe whorl, about 12 on siphonal canal. fossil Nassaria species by the pagodoid shape in First whorl with 11 or 12 strong axial ribs, running combination with a bicarinate spiral sculpture on the fromjust below upper suture to lower suture, obvious shoulder. on the shoulder, giving the shell a pagodoid shape. TV. atjehensis Oostingh, 1939 from the Indonesian Interspaces of equal size. Penultimate whorl with 19 Pliocène occasionally shows a bicarinate shoulder but axial ribs, interspaces twice as broad as ribs. Body differs by the more slender spire, the finer spiral cords whorl with 21 or22 axial ribs. and the lower number of spiral threads inside the Aperture semi-ovate, aperture and siphonal canal aperture. together lesser than 1/2 total shell length. Outer lip thick, edge rather sharp, inner side smooth. Columella Etymology. Nassaria cirsiumoides sp. nov. is named slightly curved, smooth. Siphonal canal short, straight, after the botanic genus Cirsium Miller (Compositae), open. feather-thistles, being more or less similar in shape Periostracum thick, yellow-brown, arranged in axial with apricky surface. lamellae, denserand thickeron axial ribs. Operculum lanceolate-ovate, yellow-brown, covered GenusMa«fl/-/a Smith, 1906 with fine growth-lines. Nucleus terminal, blunt. Type species: Manaria thurstoni Smith, 1906, by Animal and radulaunknown. original désignation. Remarks. Manaria callophorella sp. nov. is Fora study ofthe species belonging to this deep-water characterized by the pagodoid shape and inflated genus we referto Bouchet & Warén (1986). whorls. M clandestina Bouchet & Warén, 1986 from the Manaria callophorella sp. nov. Philippines is most similar in spiral sculpture and Figs5-10, 13 periostracum but differs in the more slender spire, the rather convex whorls (instead ofinflated and angular), Material examined. Holotype, 19.3 mm, between the broader axial ribs and the lesser number of spiral TaiwanandJapan, MNHN. threadswithinthe aperture. Paratype 1, 21.7 mm, between Taiwan and Japan, Kapala kengrahami Ponder, 1982 from deep wateroff KBlNnr. 30.187. Australia (type species oïKapala Ponder, 1982: 201- Paratype 2, 20.0 mm, idem., KF nr. 4120. 202) has a similar operculum, a similar sculpture on Paratype 3, 21.3 mm, with operculum, idem., JCH. the early whorls and an even much more pagodoid Paratype 4, 19.9 mm, with periostracum, Helen Bank, shape, but differs by the multispiral protoconch southem SouthChina Sea, 500 m deep, KF nr. 2833. consistingof3 whorls. Figures 1-6 1-4.Nassariacirciumoides sp.nov.,betweenTaiwan andJapan. 1-2. HolotypeMNHN, 30.4 mm. 3-4. Paratype 4, 31.4 mm, KFnr. 3137. 5-6. Manariacallophorella sp. nov., betweenTaiwanandJapan, holotypeMNHN, 19.3 mm. 86 K.Fraussen Twonew Buccinidae NOVAPEX 5 (2-3): 85-89, 10juil. 2004 87 K. Fraussen Two new Buccinidae NOVAPEX 5 (2-3): 85-89, 10juil. 2004 Etymology. Manaria callophorella sp. nov. is derived Buccinidae with description ofnew taxa. In: from kallos (Greek) meaning "abeauty" andtranslated Résultats des Campagnes MUSORSTOM. I & IL to the Latin as callos; and phoros (Greek) meaning Philippines, tome 2. Mém.Mus.natn.Hist.nat., "wearing", to evocate the animal which was wearing "1985", sér.A, ZooL, 133: 457-499. this beautiful shell, with the diminutive suffix ella Cemohorsky, W. 1981. The familyBuccinidae. Part 1: (Latin) to evocate the small size. The GêneraNassaria, TrajanaandNeoteron. In: Abbott, R. T., Monographs ofMarine MoUusca. ACKNOWLEDGMENTS Taxonomic Revisions ofthe Living and Tertiary Marine MoUusca ofthe World. No. 2. American I am grateful to Igor Bondarev (Crimea), Jens & Malacologists, Inc. Florida. Christa Hemmen (Germany) and Franz Huber Link, H. F. 1807. Beschreibung derNaturalien- (Austria) for procuring the type material, to Guide T. Sammlung derUniversitat zu Rostock, 3: 101-165. Poppe (Belgium) for digital images and for his Rostock. enthousiasm and support, and to David Monsecour Ponder, W. F. 1982, A new genus and species of (Belgium) forcorrectingthe Englishtext. Buccinidae (MoUusca: Gastropoda) fromthe Continental Slope ofeastem and southem REFERENCES A.\xs\.ïa\\ai.Journ.Malac.Soc.Aiist.. 5 (3-4): 201- 207. Bouchet, P. & Warén, A. 1986. MoUuscagastropoda: Taxonomical notes on tropical deep water Figures 7-13 7-10. Manariacallophorella sp. nov. 7-8. Paratype 3, 21.3 mm, offTaiwan, CJM. 9-10. Paratype 4, 19.9 mm, South China Sea, Helen Bank, KF nr. 2833. 11-12. Nassariacirciiimoides sp.nov., protoconch ofthe holotype. 13. Manaria callophorella sp.nov., protoconch ofthe holotype. K. Fraussen Two new Buccinidae NOVAPEX 5 (2-3): 85-89, 10juil. 2004 89