LVTZ, LIST OF GREATER AXTILLEAN SPIDERS 113 



Porto Eico 



Politically Porto Eico includes Culebraj A^ieques, Desecheo and Mona. 

 In Table II and in what follows these islands are included when Porto 

 Rico is mentioned unless the context clearh^ implies a distinction. It 

 seems that the only error this might cause would be to make the con- 

 clusion concerning the cosmoj^olitan character of the Porto Rican fauna 

 less clear cut than it would be if we considered only the main island. 



There are 51 genera known from the Porto Eican islands of which 

 only 5 or 9.8 per cent, are not known from the other Antilles. It is 

 interesting that four (Sticlioplastus, CEcohius, Mecolcestlius and Edricus) 

 of these five are added to the fauna by this list, while the other one 

 (Pardosa) is credited as peculiar in the Antilles merely because a dubious 

 taxonomic shift has taken a Cuban species out of the genus. N"o known 

 genera are peculiar to the Porto Eican islands. All of these five genera 

 are known elsewhere in America; one being found elsewhere onh^ in 

 South America ; two only from South America to Mexico ; one from 

 Brazil to Massachusetts, in Azores, Canaries, Mediterranean region, 

 Arabia, Japan and New Caledonia; and the fifth is practically cosmo- 

 politan. 



Unfortunately the standing of ProsthecUna is in considerable doubt. 

 As Simon considers it in part a synonym of Saitis it would be difficult 

 to determine its Old World distribution. For details see page 107. It 

 will be omitted from further discussion. As it occurs in the other An- 

 tilles, whether it be a synonym of Saitis or not, this omission does not 

 affect the statements of the preceding paragraph. 



Of the 50 remaining genera, 15 (30 per cent.) are restricted to Amer- 

 ica (including Wala, which is found in Bermuda). All of these are 

 known from the continent, being distributed as follows : 12 are known 

 from South America, 12 are known from Central America, 9 are known 

 from United States. 



Of the 35 genera found also in the Old World, only one, Drymusa, is 

 not known from the American mainland. As has been stated its distri- 

 bution is Mona, St. Vincent and Cape of Good Hope. Of the remaining 

 34, 33 (5) are known from South America, 32 (4) are known from 

 Central America, 28 (2) are known from United States. 



Leaving out, as was done in considering the Lesser Antilles, the rather 

 generally distributed genera, Ave have the numbers shown in parentheses. 

 They refer to Miagrammopes, Dijsderina, Opopcea, Artema, Hahnia, and 

 Oxyopeidon. The details of their distribution may be had by reference 

 to the taxonomic part of this paper. All are found in the Lesser Antilles 

 and only one (Miagrammopes) elsewhere in the Antilles. 



