172 MR. A. GARRETT CTN THE TERRESTRIAL [FfO. 15, 



2. Trochonanina MICROCONUS. 



Nanina nijcroco?i?/s, Mousson, Journ.de Conch. 1865, p. 192; 

 {Thalassia) Paetel, Cat. Conch, p. 85. 



Helix microconus, Pfeiffer, Mon. Hel. v. p. 94. 



Zonites (Comtlus) microconus, Mousson, Journ. de Conch. 18/0, 

 p. 117; Paetel, Cat. Coach. 1873, p. 8G ; Schmeltz, Cat. Mus. 

 Godeff. V. p. 90. 



Helix pinnockii, Liardet, Proc. Zool. Soc. 18/6, p. 100, pi. 5. 

 figs. 5, 5a. 



Widely diffused over the group, and, like the preceding, this species 

 lives beneath decaying vegetation. It occurs also in the Tonga and 

 Samoa Islands. 



A minute, perforated, conical, greyish horn-coloured species with 

 5g spirally striated whorls, the last one acutely angulated and the 

 base smooth. 



3. Trochonanina barkasi. 



Helix barlasi, Liardet, Proc. Zool. Soc. 1876, p. 100, pi. 5. 

 fig. 6. 



This species, which is quite unknown to me, was found at Taviuni 

 by >\Ir. Liardet. He describes it as follows : — 



" Shell minute, trochiform, very minutely perforated, colour 

 golden horny ; whorls 5^, convex, roughly and irregularly striated, 

 transversely ribbed, last whorl acutely carinated ; beneath slightly 

 convex ; striae radiating from the perforation ; aperture oblique and 

 triangular." 



4. Trochonanina calculosa. 



Helix calculosa, Gould, Expl. Exp., Shells, p. 48, pi. 5. fig. 63 ; 

 Pfeiffer, Mon. Hel. iii. p. 41. 



Zonites (Conulus) calculosus, H. & A. Adams, Gen. Moll. ii. 

 p. 116. 



Nanina calculosa. Gray, Cat. Pulm. p. 126 ; Schmeltz, Cat. Mus. 

 Godeff. V. p. 91. 



Trochonanina calculosa, Garrett, Journ. Acad. Nat. Sci. Philad. 

 1884, p. 22. 



A few specimens were found on the leaves of the bushes at Malolo 

 Island. It is also common and widely diffused throughout the 

 Society Islands. ' Numerous examples occurred to my notice at 

 Dominique, one of the Marquesas Islands. 



A minute, globose- pyramidal species, witli an angulated body- 

 whorl, reflexed columella, and punctiform perforation. Colour pale 

 corneous ; whorls 5, convex. 



Genus Zonites, Montfort. 

 1. Zonites vitiensis. 

 Zonites vitiensis, Mousson, Journ. de Concli. 18G5 p. 193; 



