OP CONCHOLOGY. 143 



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

 the Continent and this sub-province — Gijdotus 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 Eico 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 Curagao, 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 S. 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 Prench Guiana. 



Puim 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 S. ahearia, Dillw., 

 and *S'. uva to Guadeloupe. The former, with the var. ruMcunda, Menke, 

 belongs, I believe, to the Bahamas. 



