MoUusca of Grenada. 437 



conic, sharp ; aperture oblong oval ; peristome acute, not ex- 

 panded ; columellar margin reflexed over the narrow umbi- 

 licus. The dimensions given above are those of a typical 

 example. 



This shell is probably nearest to B. tenuissiinus and B. se- 

 pulcralis. It is larger than either of those species, and ap- 

 proaches to B. liliax^eus in some respects. 



7. Tornatellina lameUata, Pot. & Mich. 

 The Grenada shell to which the name T. Funcki is applied 

 in Bland's list (1861) is identical with the form from Trinidad 

 which has recently been described by Dr. Pfeiffer as T. Blan- 

 diana, and which I refer to the T. lamellata of Potiez and 

 Michaud. 



8. Stenogyra caracasensis, Reeve. 



9. Stenogi/ra octo7ia, Chemn. 



10. 8tenogyra plicateUa^ Guppy. 



The description of this species will be found under Part III., 



Trinidad. The Grenada specimens are intermediate between 



the vars. a and 7. They were probably included in Bland's 



list as St. subula, PfeifF. 



11. Ennea hicolor^ Hutton. 

 12. Succinea approximans^ Shuttl. 

 13. Cyclotus grenadensis^ Shuttl. 

 This is very nearly allied to C. rugatus^ Guppy. It may be 

 distinguished by the comparative smoothness of the last whorl, 

 upon which, in C. grenadensisy the wrinkled strige become ob- 

 solete. The present species is of a lighter colour than C. 

 rugatus. 



14. Helicina Heatei, Pf. 



I did not collect this species. 



Part III. TRINIDAD. 



With one exception, the species now described have not 

 hitherto been recorded from Trinidad ; and most of them are 

 minute and of rare occurrence. Stenogyra pUcatella was in- 

 cluded in my list in the ' Annals ' (ser. 3. vol. xvii. p. 50) as 

 BuUmus octonoides^ Adams, from which, however, I find it is 

 very different. Zonites Guildingii, Helix hactricola^ and Heli- 

 cina ignicoma inhabit the mountains of Aripo. 



The proportion of minute species of shells in Trinidad is 



