Nassarius (Niotha) cinctellus (Gould), Cernohorsky, Trop. Pacific mar. shells p.84, pl. 26,fig.2. Shell up to 12.0 mm in length but frequently smaller, teleoconch of 5-5% angulate whorls, pro- toconch of 34-3½ glassy-purple, finely carinate embryonic whorls; sculptured with strong, angulate axial ribs which continue to the back of the outer lip; spiral sculpture consists of numerous, close-set spiral cords which override axial ribs where they form small nodules, nodules sometimes bluntly echinate and arranged in 3 spiral rows on the body whorl, siphonal fasciole with oblique cords. Aperture nar- row, outer lip thickened and variced, denticulate within, columellar callus narrow, laminate anterior- ly, lower half of columella denticulate. White to cream in colour, protoconch and 1-2 post-embryonic whorls purple, later whorls with an interrupted narrow dark band against sutures, body whorl with a narrow or broad, brown to dark purple-brown central band, rarely with 2-3 bands, columella and aperture white. Operculum brown and serrate at margins. TYPE LOCALITY. Pacific Ocean (cinctellus); Ticao I, Philippines, 7 m (geniculata); none (parva). The Fiji Is, is here designated as the type locality. DISTRIBUTION. From the Philippines to the Samoa and Tonga Is. In clean and weedy coral sand, in sand-pockets of reefs, within the intertidal region. Type specimens. The holotype of N.cinctellus (Gould), is in the National Museum of Natural History, Washington, No.USNM-5723, length 8.3 mm, width 5.2 mm, and a paratype is in the Academy of Natural Sciences, Philadelphia, No. 16294. Three syntypes of Nassa geniculata A.Adams, are in the British Museum (N.H.), London, No.197339, and the specimen measuring length 9.6 mm, width 5.9 mm, is here selected as the lectotype (Pl.18, fig.8). Three syntypes of N.parva Marrat, are in the Merseyside County Museum, Liverpool, and the specimen measuring length 5.3 mm, width 3.5 mm, is here designated as the lectotype (Pl.18, fig.9). Material examined. PHILIPPINES: Cebu City, Cebu; Negros I (both USNM); Matabungkai, c. 115 km S.S.W. of Manila; Cawit, Marinduque; W. of Kawayan, Marinduque I (all AMS); PAPUA NEW GUINEA: Madang (coll. Bratcher); Nanga, E. New Britain (coll. Parkinson); SOLOMON IS: Marau Sound, Guadalcanal; Matui I, Marovo lagoon, New Georgia (both Auckland Univ.); Ugi I (USNM); reef at Aoki Harbour, Malaita I (AMS); Malu, N.Malaita I (coll.Parkinson); NEW HEBRIDES: Espiritu Santo I (coll.Coles); Tangoa I, S.Santo I (coll.Gardner); Port Havannah and Tuki Tuki Pt., both Efate I (coll. WOC); Aneityum I (coll. Richardson); SAMOA IS: Tutuila 1 (USNM); FIJI IS: Malevu reef, Mamanuca group; Yewalu reef, near Lautoka, W.Viti Levu; 6.4 km E. of Sigatoka, S.W. Viti Levu; W. of Rat Tail Passage, Suva reef (all coll.Marrow); Nananu-i-Ra I, N. off Viti Levu (coll. Bratcher); S. of Cave I, Suva Bay, 18°07'S & 178°23'E (ZMC); Lomalagi, S.Viti Levu (coll.Eker); Lami, S.Viti Levu (coll.McCausland); TONGA IS: Makahaa (LACM). Tomlin (1940) correctly synonymised N.parva Marrat, with N.geniculata A.Adams (= cinctellus Gould), but incorrectly added N.tabescens Marrat to the synonymy of N.cinctellus. No locality has been given by Marrat for his N.parva, but the types are now labelled "Australia".