The Prosobranchia of the Siboga Expedition /

New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean

“…nov. is remarkably smaller than the type specimen of Drillia kwandangensis (4.3-6.6 mm vs 8.2 mm, mean 5.15 mm in length) and differs in color (white or yellowish-white with an amber-orange band bordering the adapical suture and tinged with the same color on the adapical part of the base vs a uniform red-brown). The new species is comparable to Otitoma timorensis (Schepman, 1913), in protoconch features and shape, but judging from the photographs of the holotype ZMA 138096 (Fig. 2L-N), Otitoma sororcula sp.…”

“…According to Wiedrick (2014), the genus Thelecytharella differs from Otitoma in having a broadly domed instead of bulbous protoconch, with a weak parietal callus pad and "open" anal sinus rather than restricted as in Otitoma. Although described by Kilburn (1995) as "bluntly conical, of about 3 whorls", species belonging to Thelecytharella show a remarkable variability in protoconch shape, varying from multispiral and bluntly conical (as in Otitoma oneili Barnard, 1958) to paucispiral and bulbous (Otitoma timorensis Schepman, 1913) and the stated difference is therefore very doubful. Similarly, the taxonomic value of anal sinus structure in supraspecific classification is uncertain.…”

“…nov. differs in protoconch structure but otherwise conforms in sculpture to this group. Shuto (1970) proposed the genus Lioglyphostomella for the two Recent species Otitoma kwandangensis and O. timorensis, both described by Schepman (1913), which differ from the "typical" group in having stronger, more prominent axial ribs crossed by few spiral cords forming low nodules where crossing the axials (Shuto 1970: 165). Otitoma sororcula sp.…”

“…The specific epithet comes from the Latin 'sororcula', meaning 'a little sister', alluding to its strong resemblance to Otitoma kwandangensis (Schepman, 1913). …”

Recent and Tertiary deep-sea limpets of the genusPectinodontaDall (Mollusca: Gastropoda) from New Zealand and New South Wales

“…aff. coni/ormis (Marwick) (Early to Middle Miocene, New Zealand), P. arcuata Dall (1882) (Caribbean, 413-1067 m), P. orientalis Schepman (1908) (Celebes, 1310 m), P. alta Schepman (1908) (Timor,390 m), Cocculina rhyssa Dall (1925) (Japan, 457-1640 m), Cocculina maxima Dautzenberg (1925) (Eastern Atlantic,, P. gilbertvossi Olsson (1971) (Gulf of Panama,(3193)(3194)(3195)(3196)(3197)(3198)(3199)(3200), P. aupouria n. sp. (New Zealand, 366-1100 m), P. morioria, n. sp.…”