368 NEOTROPICAL PSELAPHIDAE 



Table VIII 



Country Approximate area Species of 



in square miles Pselaphidae 



Argentina 1,153,000 49 



Bolivia 514,000 45 



Brazil 3,293,000 356 



British Guiana 89,500 1 



British Honduras 8,600 4 



Chile 289,800 45 



Colombia 440,800 59 



Costa Rica 23,000 8 



Cuba 44,000 6 



Dutch Guiana 46,000 3 



Ecuador 116,000 1 



French Guiana 32,000 6 



Guatemala 48,200 50 



Hispaniola 28200 3 



Honduras 44,200 1 



Leeward Islands 700 13 



Mexico 767,000 HI 



Nicaragua 49,200 4 



Panama 32,400 79 



Paraguay 97,700 21 



Peru 709,800 10 



Puerto Rico 3,400 4 



Uruguay 72,000 1 



Virgin Islands 100 16 



Venezuela 398,600 54 



Windward Islands 500 19 



All three columns have been adjusted. Some areas, notably Jamaica (4200 

 square miles) have no Pselaphidae reported! Haiti and the Dominican Republic 

 are combined under the older name of Hispaniola because of doubt of the orig- 

 inal type localities in two of the three species. The Pearl Islands, Panama Canal 

 Zone, and the Republic of Panama are united. The area data are atlas simplifi- 

 cations, with fractions of one hundred square miles not used ; furthermore, recent 

 boundary settlements are not integrated as exact data are lacking. The third 

 column represents the species reported, in all save a few cases where overlap 

 was taken into account. These faunal figures represent the situation to the best 

 of my ability but are not necessarily exact as there is always the possibility of 

 overlooking a paper. The only large regional study is that of Sharp (1887) for 

 Central America. We have nothing comparable to Bequaert (1940) on the 

 Tabanidae of the Antilles, or a modern faunal analysis of a limited area such 

 as Wetmore and Swales (1931) or Cochran (1941) on the birds and herpetology, 

 respectively, of Hispaniola. 



This eighth table brings out some correlations of interest. Thus we find 

 that the United States, with an area of about 3,026,700 square miles has had the 

 advantage of relatively very intensive study, and lists 384 species of Psel- 

 aphidae; Brazil, with an area of about 3,293,000 square miles, of relatively very 

 little studied territory, lists 356 species of Pselaphidae! This latter figure repre- 

 sents nearly half the described neotropical species, and attests to the amount of 

 work to be done. That is, it is not as though the pselaphid fauna of the United 

 States were poorly known. Even as early as 1850, LeConte, in his classical paper 



