I887.J MOLLUSKS OF THE VITI ISLANDS. 167 



Major diam. 15 to 21 millim. Gould's first name being preoccu- 

 pied by Lowe for a Madeira Helix, he changed it to casca, 



3. Nanina pfeifferi. 



Helix j)f<^lff<'.>-i (lYanina'!), Philippi, Arcli. f. Nat. 1845, p. 62 • 

 Chemnitz, 2nd ed. Helix, pi. 31. figs. 9-10; Pfeiffer, JNIon. Ilel! 

 1. p. .04; Reeve, Concli. Icon. no. 1282, pi, 1F5. 



minina pfeiferi. Gray, Cat. Piilm. p. 94 ; {Xesta) Albers, Die 

 Hel. p. 59 ; H. & A. Adams, Gen. Moll. ii. p. 223 ; {Xesta) 

 Ifeitfer, Vers, p. 120 ; {Xesta) Mousson, Journ. de Conch. 1870. 

 p. 11 1. 



Helix lurida, Gould, Proc. Bost. Soc. Nat. Hist. 184f^ d 179 • 

 Pfeiffer, Mon. Hel. i. p. 4 7. 



Nanina lurida, Gould, Expl. Exp., Shells, p. 31, fig. 68 ; Gray, 

 Cat. Pulm. p. 128; (Hemiplecta), H. & A. Adams, Gen. Moll. li. 

 p. 223 ; {Xesta) Paetel, Cat. Conch. 1873, p. 85 ; JNIousson, Journ. 

 de Conch. 1865, p. 190; Schmeltz, Cat. Mus. Godeff. v. p. 71. 



I received many examples of this species from a missionary who 

 collected them at Kantavu. Dr. Griiffe obtained specimens in Viti 

 Levu. 



Though I have followed Pfeiffer and Mousson in referring this 

 species to pfeifferi, still I have some doubts as to their being the 

 same species. Pfeiffer and Deshaves assisn it to China, and 

 Cuming erroneously cites the Sandwich Island's as its habitat. 



Though nearly as large as nouleti, it may be distinguished by its 

 light colour, more depressed whorls, and smooth surface. 



4. Nanina fragillima. 



Nanina {Xesta) fragillima, Mousson, Journ, de Conch. 1870 

 p. 112, pi. 7. fig. 3 ; {Microcystis) Paetel, Cat. Conch. 1873, p. 8^! 



Hehx fragillima, Pfeiffer, Mon. Hel. vii. p. 91. 



I am indebted to Dr. Griiffe for examples of this species which he 

 obtained in the interior of Viti Levu. It is also recorded from 

 Kantavu. 



It IS a thin, transparent, shining, pale horn-coloured species with a 

 depressed spire and strongly convex base. The last whorl is con- 

 spicuously angulated. Major diam. 14 millim, 



5. Nanina similis, 



Euripus similis, Semper, Phil. Landmoll. i. p, 37, pi. 1. fie-. 18 

 pi. 2. fig. 91. I f & , 



Nanina {Euripus) similis, Schmeltz, Cat. Mus. Godeff. v. p. 91. 

 Helix similis, Pfeiffer, Mon. Hel, vii. p. 1 12. 



This species, which is uuknown to me, was collected by Dr, Graffe 

 on Viti Levu. 



It is described as a solid, orbicular, depressed shell of a fuscous 

 horn-colour, with irregular fuscous lines ; whorls bi, the last one 

 obsoletely angulated just above the periphery, Diam. 17, height 

 IO5 millim. 



