OP CONCHOLOGT. 143 



only by species of ITeMcina. There are 2 species common to 

 the Continent and this sub-province — Gyclotus translucidus, 

 Sowb., of Venezuela and Trinidad, and Helicina Dysoni, Pf., 

 of that island and Honduras. Helicina fasciata, Lam. ; as 

 already mentioned, is common to this and the Porto Kico sub- 

 province. 



This group of islands has unquestionably very marked 

 relationship with South America. 



In connection with this sub-province, I may observe that 

 the land shell fauna of Curacao, situated at no great distance 

 from the coast of Venezuela, is somewhat anomalous. 



The following 4 species are known from thence: Tudora 

 megacheila, P. and M., of a genus belonging especially to Ja- 

 maica, and with 1 continental (Mexican) species only, Helix 

 pentodon, Menke, more allied to IT. tichostoma, Pf., of Cuba 

 (judging from description), than to any other insular species. 



Bulimus elongatus, Bolt., distributed in several of the is- 

 lands embraced in the fourth and fifth sub-provinces, and also 

 found on the Continent, in French Guiana. 



Pupa uva, Lam., of the sub-genus Strophia, which has one 

 continental species only (incana, By., of Florida), and whose 

 insulated distribution is confined to the first, third, and fourth 

 sub-provinces* 



(To be continued.) 



* Albers (Die Heliceen, 1861) erroneously attributes 8. ahearia, Dillw., 

 and S. uva to Guadeloupe. The former, with the var. rubicunda, Menke, 

 belongs, I believe, to the Bahamas. 



