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Show 1887.] MOLLUSKS OF THE VITI ISLANDS. 287 Melampus strictus, Gassies, Journ. de Conch. 1874, p. 213; Pfeiffer, Mon. Pneum. (Auric.) iv. p. 324. Melampus pseudocommodus, "Mousson," Schmeltz, Cat. Mus. Godeff. iv. p. 69 ; Paetel, Cat. Conch, p. 114. A few examples found just above high-water mark on a small islet on the north coast of Vanua Levu. Pfeiffer's type specimens in Cuming's Museum were labelled Admiralty Islands. His M. fricki, together with Pease's semi-plicatus and Mousson's pseudocommodus, were obtained at the Sandwich Islands, where I first discovered Pease's type specimens. Shells received from New Caledonia labelled M. strictus do not differ from Viti examples. The longitudinal plications on the upper third of the shell, pale or dark brownish colour, numerous whorls, rather long acute spire, and single parietal fold will readily distinguish this species. The basal portion is also more or less distinctly plicated. The palate has from one to three laminae. Length 10 millim. 7. MELAMPUS CONSANGUINEUS, sp. nov. Shell imperforate, solid, obovate, smooth, shining, faintly striated with lines of growth, light chestnut-brown ; spire convexly conoid, apex mucronate ; sutural line distinct, linear; whorls 7, flattened, the last one subangulate on the shoulder, and obliquely impressedly striated at the base ; the lower portion of the parietal region with two spiral plications, the upper one the larger, and occasionally there exists one or two posterior denticles; palate with from 11-14 white plicae ; columellar fold continuous with the basal portion of the peristome. Length 9, diam. 5 millim. Not uncommon at high-water mark at Vanua Levu. The uniform pale chestnut colour and numerous plications in the throat will determine it. 8. MELAMPUS STRIATUS, Pease. Melampus striatus (Tralia), Pease, Proc. Zool. Soc. 1861, p. 244, 1871, p. 477; Pfeiffer, Mon. Pneum. (Auric.) iv. p. 311 ; Garrett, Journ. Acad. Nat. Sci. Phil. 1885, p. 89. Melampus montrouzieri, Souverbie, Journ. de Conch. 1866, p. 148, pl. 6. figs. 1, la; Pfeiffer, Mon. Pneum. (Auric.) iv. p. 312. Melampus ornatus, Mousson, Journ. de Conch. 1871, p. 21, pl. 3. fig. 7 ; Pfeiffer, Mon. Pneum. (Auric.) iv. p. 312. Not infrequent on the margins of mangrove-swamps in the Viti, Tonga, and Samoa Islands. It also inhabits the Society Islands and New Caledonia. It may be distinguished by its oblong-ovate form, the brownish-corneous, chestnut-brown, or greenish-brown colour, its mucronated spire, and the 8 whorls marked by closely-set transverse impressed lines'the upper half with small longitudinal plications, which give 20* |