178 MR. A. GARRETT ON THE TERRESTRIAL [Feb. 1.5, 



Inteous-corneous, the periphery margined above and beneath with a 

 reddish-chestnut line, the upper one following the whorls of the 

 spire ; suture with a depressed, narrow marginal line ; whorls tJ^, 

 slightly convex, rather rapidly increasing, last one uot descending 

 in front, acute and compressedly carinated, keel whitish ; base more 

 polished than above, convex ; aperture very oblique, depressed, sub- 

 rhomboid-lunate ; peristome thin, straight above, margins cou- 

 verging, basal portion slightly thickened and gently arched. 



Major diam. 20, height 7 millim. 



I received several hundred examples of this very distinct species 

 from a missionary who collected them in Kantavu Island. He gave 

 no information in regard to its station. 



Specimens sent to the Godeffroy Museum iii Hamburg were 

 referred to T. swainsonii, a Society- Island species; and examples 

 sent to an English correspondent were confounded with T. metcalfei, 

 PfeifPer, a Philippine species. It is probably the Helix (Fidena) 

 planorbis, in " Dr. James C. Cox's Exchange List," which he 

 accredits to Kantavu. The T. planorbis of Lesson was collected by 

 that naturalist in New Guinea, and differs from our shell in being 

 smaller, mottled with olivaceous, and in having only 5 whorls. A 

 careful comparison with the description of T. metcal/eihas convinced 

 me that it cannot be tlie same as the Kantavu shell. T. swainsonii is 

 smaller, thicker, rougher, much more variable, and the positions of 

 the lineations are different. 



Its large size, depressed form, fragile texture, luteous horn-colour 

 with the chestnut-brown marginal lines, and large umbilicus will 

 readily separate it from any other Vitian species. 



Genus Patula, Held. 



1. Patula iNERMis. 



Patula inerinis, Mousson, Journ. de Conch. 1870, p. 118, pi. 7' 

 fig. 7. 



Helix inermis, Pfeiffer, Mon. Hel. vii. p. 167; {Patula) Paetel, 

 Cat. Conch, p. 91. 



Collected by Dr. Graffe on Vanua Balavo. Beneath decaying 

 vegetation. 



A small, widely umbilicated, depressed orbicular, rufous horn- 

 coloured species, with fine, oblique, costulate striae and 4 slightly 

 convex whorls. Diameter a trifle more than 2 millim. 



2. Patula adposita. 



Patula adposita, Mousson, Journ. de Conch. 1870, p. 119, pi. 7. 

 fig. 8. 



Helix adposita, Pfeiffer, Men. Hel. vii. p. 87 ; {Patula) Paetel, 

 Cat. Conch, p. 87. 



Difcovered by Dr. Graffe on Oneata Island. 



A little larger and paler than the preceding species, and the um- 

 bilicus is smaller, and the acute plicate striae are uot so crowded. 



