18 Geographical Distribution 



island. Pupa Paredesii Orb. is attributed to it as well as to 

 South America, and several species of other genera nearly 

 allied to West Indian forms also occur in it. 



In Table II. lists are given of those species, inhabitants of the 

 West Indies, which are found in other parts of the world, and 

 also of those which are in more than one of the islands. Certain 

 of the islands are distinguished by name, — the last column 

 includes those E. and S. of Portorico and Yieqne. The object 

 of the Table is to show the specific, as of Table I. the generic 

 connexion of the islands with the N. and S. American con- 

 tinents. 



The only species common to Europe and the West Indies are 

 B. acicula Mtill. (Bermuda), B. decollatus L. (Cuba), and B, 

 ventrosus Fer. (Bermuda), — the two former occur also in the 

 southern part of Eastern N. America. II. similaris Fer., a 

 widely distributed species, found in Brazil, inhabits Barbados, 

 but not Cuba, as stated by Pfeiffer (Mon. Hel. I.). S. unguis 

 Fer. referred to Guadeloupe by Beau, is also said to belong to 

 Bolivia. The other S. American species mentioned in Table II. 

 are found north of the Equator. 



There are twenty-three species of N. America, and twenty- 

 one (exclusive of 11. sirnilaris and S. unguis) of S. America, 

 ]Sr. of the Equator, 0. undatus and A. octona being in both, 

 which also occur in the West Indies. Omitting the two latter 

 species, the following is the distribution of the others. 



N. American Species. 





S. 



American Species. 



In Bermuda .... 



2 





None. 



In Bahamas, Cuba, and I. of Pines . 



15 





None. 



In Jamaica .... 



6 





1 



In Haiti ..... 



4 





2 



In Portorico and Vieque 



6 





3 



Total in Islands W. of Vieque . 



18 





3 



Total in Islands E. and S. of Vieque 



7 





18 



Of species found in Portorico and Yieque (not on the conti- 

 nents) ten are in the islands to the westward, and twenty-one 



