184 MR. A. GARRETT ON THE TERRESTRIAL [Feb. 15, 



rather thin, the sculpture the same as on P. rugosus, and the colour 

 ruddy corneous or whitish, often with a reddish spire. Though 

 very frequently wholly decorticated, the epidermis, when present, 

 is very thin, light fulvous, and usually beautifully mottled with 

 green, which is occasionally disposed in zigzag pattern. The aper- 

 ture and lips are more or less intense saffron-yellow, paler in the 

 throat. The columellar fold is not so conspicuous, and is more 

 vertical than in the preceding species. The peristome, though 

 usually simple, is often slightly expanded, particularly so in the 

 Rambi shells, some of which have the lip slightly reflected. 



11. PlACOSTYLUS GNAUENSIS. 



Bulimus gnauensis, Garrett, Amer. Journ. Conch. 1872, p. 235, 

 pi. 18. fig. 8 (in err. guajiensis) ; Pfeiffer, Mon. Hel. viii. p. 36; 

 (Placosfylus) Crosse, Journ. de Conch. 1875, p. 18. 



Placostijlus gnauensis, Schmeltz, Cat. Mus. Godeff. vi. p. 81. 



This graceful species is common and peculiar to Gnau Island, 

 where it lives on trees and shrubs. 



It may be recognized by its rather thin texture, oblong-ovate or 

 elongate-ovate form, whitish, yellowish, or reddish horn-colour, orna- 

 mented with longitudinal undulating olive-green stripes, which are 

 frequently shaded off with white. The surface is rugose, with small 

 transverse corrugations. The aperture is tawny yellow or reddish, 

 rarely white, and the lips, which are but slightly expanded, are more 

 intensely coloured than is the throat. Length 45 millim. 



12. PlACOSTYLUS GRAEFFET. 



Placostylus elobatus, Mousson (not of Gould), Journ. de Coach. 

 1870, p. 124. 



Placostylus moussonii, " Graffe," Schmeltz, Cat. Mus. Godeff. v. 

 p. 93. 



Bulimus, sp., Garrett, Arner. Journ. Conch. 1872, p. 232. 



i^HZ»HMSw«oM5so?it7, Crosse (not of Pfeiffer), Journ. de Couch. 1875, 

 p. 11. 



Bulimus gr'dffei, Crosse, I. c. p. 13 ; Pfeiffer, Mon. Hel. viii. p. 30. 



This ground-species appears to be restricted to the central portion 

 of Yiti Levu, where it was discovered by Dr. Graffe. I am indebted 

 to the latter gentleman for two examples of this species, which is 

 about the same size and shape as P. elobatus, but is a smoother shell, 

 and the colour of my two specimens is olivaceous without any mark- 

 ings. The aperture is whitish, and the columellar fold is more 

 horizontal than in the latter species. 



13. Placostylus vitiensis, sp. nov. 



Bulimus vitiensis, Garrett, MS. (coll. Garrett). 



Placostylus vitiensis, "Garr.," Schmeltz, Cat. Mus. Godeff. vi. 

 p. 81. 



Shell umbilicated, oblong-ovate, rather solid, slightly shining ; 

 rosy flesh-colour beneath a thin translucent epidermis, which is 

 decorated with longitudinal olive-green zigzag stripes ; surface of 



