1887.] MOLLUSKS OF THK VITI ISLANDS. 183 



%. 7; Pfeiffer, Mon. Hel, viii. p. .SO; (F/acosfi/lus) Crosse, Journ. 

 de Conch. 1875, p. 17, pi. 1. fig. 8. 



Placostylus hoyti, Schmeltz, Cat. Mus. Godeff. vi. p. 81. 



This beautiful terrestrial species is coufiiied to that portiou 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 inillim. 



9. Placostylus rugatus. 



Bulimus rugatus, Garrett, Amer. Journ. Cjnch. 18/2, p. 234, 

 pi. 18. fig. 1 ; Pfeiffer, Mon. Hel. viii, p. 35 ; {Placoslylus) 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, 

 pi. 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. 

 Tlie 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, 

 pi. 18. fig. 3 ; Pfeiffer, Mon. Hel. viii. p. 36 ; {Placostylus) Crosse, 

 Jonrn. de Couch. 1875, p. 19. 



Placoslylus ochrostoma, Schmeltz, Cat. Mus. Godeff. vi. p. 81. 



Bulimus rumbieiisis, Garrett, Amer. Journ. Conch. 1872, p. 233, 

 pi. 18. fig. 4 ; Pfeiffer, Mon. Hel. viii. p. 36 ; {Placostylus) Crosse, 

 Journ. de Couch. 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 



