1887.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 casea. 



3. Nanina pfeifferi. 



Helhv ffeiffe.ri {Namnal), Phihppi, Arch. f. Nat. 1845, p. 62 ; 

 Chemnitz, 2nd ed. Helix, pi. 31. figs. 9-10; Pfeiffer, Mon. Hel. 

 i. p. 54; Reeve, Conch. Icon. no. 1282, pi. 185. 



Nanina pfeiff'eri. Gray, Cat. Puhn. p. 94 ; {Xesta) Albers, Die 

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

 Pfeiffer, Vers, p. 120 ; {Xesta) Mousson, Journ. de Conch. 18/0, 

 p. 111. 



Helix lurida, Gould, Proc. Bost. Soc. Nat. Hist. 1846, p. 1/9 ; 

 Pfeiffer, Mon. Hel. i. p. 47. 



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

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

 p. 223 ; {Xesta) Paetel, Cat. Couch. 1873, p. 85 ; Mousson, Journ. 

 de Conch. I860, p. 190; Schmeltz, Cat. Mus. Godeflf. v. p. 71. 



I received many examples of this species from a missionary who 

 collected them at Kantavu. Dr. Griifife 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 heing the 

 same species. Pfeiffer and Deshayes assign it to China, and 

 Cuming erroneously cites the Sandwich Islands 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. 84. 



Helix 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 sitnilis, Semper, Phil. Landmoll. i. p. 37, pi. 1. fig. 18, 

 pi. 2. fig. 91. 



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



Helix similis, Pfeiffer, Mon. Hel. vii. p. 112. 



This species, which is unknown to me, was collected by Dr. Grafife 

 oil Viti Levu. 



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

 horn-colour, with irregular fuscous lines ; whorls 5|, the last one 

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

 10| millim. 



