Nassarius (Niotha) crenoliratus (A.Adams), Cernohorsky, Trop.Pacific mar.shells p.82, pl.25,fig.3. Shell up to 14.0 mm in length, elongate-ovate, solid and squat, teleoconch of 5%-5% weakly convex whorls, protoconch of 3-3% glassy, finely carinate embryonic whorls; sculptured with broad, coarse, nodulose and frequently oblique axial ribs and a row of sutural nodules; spiral sculpture of rope-like spiral cords which become nodulose upon axial ribs, some individuals with 4-5 more elevated spiral cords and echinate nodules, siphonal fasciole broad and with 5-6 strong cords. Aperture nar- row, outer lip thick and variced, denticulate-lirate within, columellar callus moderately narrow and partly extending on to body whorl, columella angular, lower half turned towards aperture and distinctly denticulate, siphonal and anal canals prominent. White to greenish-white in colour, ornamented with brown bands or spots in interspaces of sutural nodules, some specimens with additional orange-brown lines on spiral cords, columellar callus white, aperture chocolate-brown and banded with white, pro- toconch frequently dark brown. Operculum brown and serrate or occasionally simple at margins. TYPE LOCALITY. None. Singapore, Malaysia, is here designated as the type locality (specimens in AMS and ZMC). DISTRIBUTION. From Thailand to the Philippines and the Fiji Is. In clean and muddy sand, from the intertidal zone to a depth of 11 m. Type specimens. The holotype of N.crenoliratus (A.Adams) is in the British Museum (N.H.), Lon- don, No.197330, length 9.8 mm, width 6.1 mm.

Material examined. THAILAND: Koh Kahdat near Koh Kut, 11 m (ZMC); Phuket (coll.J.Orr); MALAYSIA: Singapore (AMS; ZMC); S. of Pulau Langkawi, Kedah (coll.McCausland); Pulau Hantu, S.W.Keppel Harbour (USNM); INDONESIA: Pasir Putih, near Panjang, E. of Tanjung Karang, Lampung Province, Sumatra; bet- ween Palu and Donggala, Sulawesi; N.E.coast of Bangka I, Sumatra; Sanur beach, Bali; Pantai Pura, N. of Kupang, W. Timor (all coll.McCausland); Pelau Besar, Malacca Str. (USNM); Tanjong Aru, Jesselton, N.Borneo. (SDMNH); PHILIPPINES: Ilo llo, Panay I (SDMNH; USNM); Matabungkai, c. 115 km S.W.W. of Manila (AMS); Tilig, Lubang I (USNM); PAPUA NEW GUINEA: Port Glasgow (AMS); Kapa Kapa, c. 72 km S.E. of Port Moresby; near Yule I, Gulf of Papua (both coll. Ritter); AUSTRALIA: Michaelmas Cay, Queensland (AMS); NEW HEBRIDES: Lelepa, Efate I (coll. Bratcher); FIJI IS: Malolo Barrier reef, Mamanuca group; Manava I, N. off Viti Levu; Suva reef, S. Viti Levu (all coll.Eker); S.of Cave I, Suva Bay, 18°07'S & 178°23'E (ZMC); Suva Pt., S. Viti Levu (USNM); Vanga Bay, Beqa I (LACM); Nadi Bay (SDMNH; AMS); Lami, Suva (coll.McCausland).