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Show 1887.] MOLLUSKS OF THE VITI ISLANDS. 183 fig. 7; Pfeiffer, Mon. Hel. viii. p. 30; (Placostylus) Crosse, Journ. de Conch. 1875, p. 17, pl. 1. fig. 8. Placostylus hoyti, Schmeltz, Cat. Mus. Godeff. vi. p. 81. This beautiful terrestrial species is confined to that portion of Vanua Levu situated to the southward of Natawa Bay. Though closely related to P. elobatus in colour, markings, and sculpture, it is, however, readily distinguished by its abbreviated form, turgid body-whorl, wider aperture, expanded and reflected lip. Length 44 to 55 millim. 9. PLACOSTYLUS RUGATUS. Bulimus rugatus, Garrett, Amer. Journ. Conch. 1872, p. 234, pl. 18. fig. 1 ; Pfeiffer, Mon. Hel. viii. p. 35 ; (Placostylus) Crosse, Journ. de Conch. 1875, p. 18. Placostylus rugatus, Schmeltz, Cat. Mus. Godeff. vi. p. 81. Var. CRASSILABRIS, Garrett. Bulimus crassilabrum, Garrett, Amer. Journ. Conch. 1872, p. 233, pl. 18. fig. 5 ; Pfeiffer, Mon. Hel. viii. p. 35 ; (Placostylus) Crosse, Journ. de Conch. 1875, p. 18. Placostylus crassilabrum, Schmeltz, Cat. Mus. Godeff. v. p. 93. This arboreal species is restricted to Vanua Levu, where it is widely distributed over the island. It is a rather thin, oblong-ovate species, of a whitish colour beneath an olive-yellow epidermis, and ornamented with small olive-green blotches, which are sometimes zigzagged. Length 43 millim. The transverse rugosities do not differ from those observed on P. fulguratus. As compared with that species it is more abbreviated, the outer lip more arched and more effuse, and the aperture is more oblique. The base is also not so much produced. The variety crassilabris is more solid, and the peristome and parietal callus are much thicker than in the typical P. rugatus. This variety, of which I obtained about 200 examples, was gathered in the interior at a point about the middle of the length of the island. 10. PLACOSTYLUS OCHROSTOMUS. Bulimus ochrostoma, Garrett, Amer. Journ. Conch. 1872, p. 232, pl. 18. fig. 3 ; Pfeiffer, Mon. Hel. viii. p. 36 ; (Placostylus) Crosse, Journ. de Conch. 1875, p. 19. Placostylus ochrostoma, Schmeltz, Cat. Mus. Godeff. vi. p. 81. Bulimus rambiensis, Garrett, Amer. Journ. Conch. 1872, p. 233, pl. 18. fig. 4 ; Pfeiffer, Mon. Hel. viii. p. 36 ; (Placostylus) Crosse, Journ. de Conch. 1875, p. 19. Placostylus rambiensis, Schmeltz, Cat. Mus. Godeff. vi. p. 81. Not uncommon on foliage at Taviuni and Rambi, rare on Gomea, and I obtained two examples on that part of Vanua Levu opposite to Rambi Island. It is the smallest species, so far as known, inhabiting the group. It is rather variable in size, ranging from 28 to 40 millim. in length, and its shape varies from ovate to oblong-ovate. The texture is |
