[39] 



No less tlian four of the species, B. multifasciatus, elongatus, 

 exilis and fraiercidus are also found in French Guiana. 



Orthalicus, confined in the other subprovinces to Cuba and 

 Jamaica, has O.nndatus^ Brug., in Trinidad, and O.undulatus, 

 Guild., in the Grenadines. 



Leptinaria has L. AntiUarum, Shuttl., in several of the 

 Islands, L. Funcki, Pfr. in Grenada (also in British Guiana), 

 and L. lamellata, P. and M., in Guadeloupe, as well as on the 

 Southern Continent. 



Streptaxis has one species only in the West Indies, viz : S. 

 deformis, Fer., also in Trinidad, where Simpulopsis corrugatuSy 

 Guppy, occurs. 



Several of the forms of Succinea in this subprovince are 

 peculiar The subgenus AmpJiihulima is represented by S. 

 paiula, Brug., in St. Christopher and Guadeloupe?, Succinea 

 by S. ruhescens, Desh., in Guadeloupe and Martinique (also in 

 French Guiana). Brachtjspira by S. tigrina^ Lesueur, in St. 

 Yincent, and Omalonyx by S. unguis, Fer. (found also in Bra- 

 zil), and S. appendiculata, Pfr., in Guadeloupe. 



The distribution of the land shells in the West Indies seems 

 to warrant the division of the islands into the five above- 

 mentioned subprovinces, but it is very interesting to notice 

 that the distribution of plants renders a different division ne- 

 cessary, especially of the islands comprised in my Porto Kico 

 and Guadeloupe subprovinces. 



Grisebach, in the Preface to his "Flora of the British West 

 Indian Islands" (London, 1864), remarks, that the Islands, 

 though reaching beyond the tropics, "present a tropical char- 

 acter in their vegetable productions, and the Northern Baha- 

 mas in this respect are quite distinct from the opposite conti- 

 nental shore of Florida, from which it is separated by the Gulf 

 Stream ; while Trinidad, lying almost contiguous to the delta 

 of the Orinoco, partakes of the flora of Venezuela and Guiana. 

 Jamaica, again, from its mountainous character and more dis- 

 tant position, — most of the Leeward islands from being wooded 

 volcanoes, — and a majority of the Windward ones, with a dry 

 climate, and a low, calcareous soil, form three divisions of this 

 tropical archipelago, which show as many peculiarities." 



The author adds, that the whole of the British West Indies, 

 as comprised in his " Flora," may be divided into five natural 

 sections, each with a distinct botanical character, and including 

 the Ibllowing islands, viz. : — 



I. Bahamas and Turk Islands. 

 II. Jamaica. 



