lyH/.] MOLLUSKS OF THE VITl ISLANDS. 311 



tinged with red. The sculpture consists of rather coarse, elevated, 

 oblique strife of growth, aud closely-set spiral raised lines. The very 

 oblique aperture is subtriangular, and the obtuse peristome is more 

 or less expanded. There are 5 flat whorls, the last one with a 

 prominent compressed acute keel. Diam. 12 millim. 



2. Helicina sempert, Mousson. 



Helicina semperi, Mousson, Journ. de Conch. 1870, p. 201, pi. 8. 

 fig. S; Paetel, Cat. Conch, p. 126 ; Schmeltz, Cat. Mus. Godeff. v. 

 p. 98 (as of Graflfe) ; Pfeiffer, Mon. Pneum. iv. p. 2/8. 



Obtained by Dr. Graflfe at Oneata. 



A solid, smooth, somewhat lenticular, shining species with five 

 flattened whorls, the last one rounded at the periphery, and tlie 

 colour variable — white, yellow, reddish, frequently with reddish 

 zigzag strigations. Peristome obtusely thickened, and the basal 

 callus white. Diam. 10 millim.. 



3. Helicina interna, Mousson. 



Helicina interna, Mousson, Journ. de Conch. 1870, p. 201, pi. 8. 

 fig. 6; 1871, p. 24; Paetel. Cat. Conch, p. 125; Schmeltz, Cat. 

 Mus. Godefi". v. p. 99 ; Pfeiffer, Mon. Pneum. iv. p. 248. 



Found by Dr. Grafte in the interior of Viti Levu and at Mango 

 Island. It is also recorded from the Tonga group. 



A turbinately-conical species of a luiiform white or yellowish 

 colour, with or without a spiral reddish-brown zone, and regular 

 conical spire. Whorls .5, slightly convex, the last one rounded or 

 obtusely angulated. Peristome acute. Diam. 9 millim. 



4. Helicina gomeaensis, Garrett. 



Helicina qomeacnsis, Garrett, Proc. Phil. Acad. Nat. Sci. 1673, 

 p. 233, pi. 3. fig. 13. 



On the foliage of bushes at Gomea Island. 



A depressedly trochiform, somewhat shining species, with spiral 

 impressed striae. Colour light straw-yellow, rarely with two brownish- 

 red zones. Whorls 5, somewhat convex, last one slightly angular 

 on the periphery. The white peristome is broadly expanded. Diam. 

 10 millim. 



5. Helicina pallida, Goiild. 



Helicina pallida, Gould, Proc. Best. Soc. Nat. Hist. 1847, 

 p. 202 ; Expl. Exp., Shells, p. 96, fig. 113 ; Pfeiffer, Mon. Pneum. i. 

 p. 396 ; Gray. Cat. Phan. p. 290; {Pachystoma) H. & A. Adams, 

 Gen. Moll. ii. p. 303; Mousson, Journ. de Conch. 1865, p. 197, 

 1870, p. 200; Paetel, Cat. Conch, p. 125; Schmeltz, Cat. Mus. 

 Godeff. v. p. 74. 



I found a few examples of this species at Vanua Levu, Kioa, and 

 Vanua Balavo. On foliage. 



A cinereous or pale yellowish-white species, more depressed than 

 the preceding one, the whorls flatter, the last one angular, the 



