A new genus and thirteen new species of Scaphopoda (Mollusca) from the tropical Pacific Ocean Author Scarabino, Victor Muséum national d’Histoire naturelle, département Systématique et Évolution, case postale 51, 57 rue Cuvier, F- 75231 Paris cedex 05 (France) and Museo Nacional de Historia Natural, Montevideo (Uruguay) victor. scarabino @ mnhn. fr scarabino@mnhn.fr Author Scarabino, Fabrizio Museo Nacional de Historia Natural, Montevideo (Uruguay) text Zoosystema 2010 2010-09-30 32 3 409 423 http://www.bioone.org/doi/abs/10.5252/z2010n3a3 journal article 10.5252/z2010n3a3 1638-9387 4554365 Annulipulsellum aenigmaticum n. sp. ( Fig. 4 F-H) TYPE MATERIAL . — Solomon Islands . SALOMON 2, stn CP 2189, 08°20’S , 160°02’E , 660-854 m , 1 dd holotype ( MNHN 22796 ) ; 3 dd paratypes ( MNHN 22797 ) . TYPE LOCALITY . — Solomon Islands , 08°20’S , 160°02’E , 660-854 m (SALOMON 2, stn CP 2189). ETYMOLOGY. — From the Latin aenigmaticus meaning “mysterious”. OTHER MATERIAL EXAMINED. — Solomon Islands . SALOMON 2, stn CP 2182, 08°47’S , 157°38’E , 762- 1060 m , 2 dd. DISTRIBUTION. — Solomon Islands . Shells in 762- 854 m . DESCRIPTION Shell 5.7 mm long, solid, well curved. Surface entirely sculptured by transverse encircling wrinkles crossed by 60 longitudinal striae. Section circular, apex simple, preapical callus thick, lumen circular and central. Measurements of holotype : L 5.7, W 0.7, w 0.3, arc 0.4 at 2.7 from apex. REMARKS The characteristic transversely wrinkled surface allies this species to Annulipulsellum Scarabino, 1986 , a monotypic genus known from abyssal depths from the Atlantic Ocean, although the sectional outline of the wrinkles differs. However, the presence of longitudinal sculpture in the new species clearly distinguishes it from A. euskadii Scarabino, 1986 , which only has the transverse sculpture, although the thick apical callus and lumen is also similar (see Scarabino 1986 ). Nevertheless, no other scaphopod reported in the literature or noted in the field by us, worldwide, has similar sculpture; we refer the present species to Annulipulsellum , pending the discovery of other related species that might permit modification of the generic diagnosis or creation of a new genus.