GEOGRAPHICAL DISTRIBUTION. 



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The distribution of the 13 Neotropical genera within the region is 

 as follows: 



Aulacigaster: " West Indies." 



Blcesochcetophora: Cape Horn. 



Chymomyza: Florida, Cuba, and Panama to Matto Grosso. 



Cladochoeta: Porto Rico to Cuba, Florida, and Mexico. 



Curtonotum: Mexico to Peru, Brazil, and British Guiana. 



Drosophila: Florida and Bahamas to Argentina, Chile, and Mexico. 



Leucophenga: Florida and Cuba to Paraguay, Peru, and Honduras. 



Mycodrosophila: Isle of Pines to Trinidad. 



Pseudiastata : Panama. 



Scaptomyza: Florida and Cuba to Patagonia, Peru, and Mexico. 



Stegana: Cuba to St. Vincent, Peru, and Mexico. 



Zaprionus: Panama. 



Zygothrica: Panama to Peru and Brazil. 



The West Indian islands of Cuba and St. Vincent and the region of 

 the Panama Canal have been fairly thoroughly explored, but our 

 knowledge of the rest of the region is very incomplete. Mexico and 

 the whole South American continent especially need investigation. 



The following list shows species known from various subdivisions of 

 the region. South America has been treated as a single unit only be- 

 cause our knowledge of it is so slight. Some Neotropical species will be 

 found on the Florida list, given in the section on the Nearctic region. 



Drosophila fusca Coquillett (Porto Rico), D. mexicana Macquart 

 (Mexico), and the South American species D. aira Walker, D. gigantea 

 Thomson, D. sphoerocera Thomson, and D. tarsalis Walker have all 

 been omitted as being either unrecognizable or probably not members 

 of the genus Drosophila. 



Antigua: 



Drosophila caribbea. 

 Bahamas : 



Drosophila willistoni. 



D. melanogaster. 



D. hydei. 

 Barbados : 



Drosophila melanogaster. 



D. nebulosa. 



D. simiUs. 

 British Honduras: 



Drosophila caribbea. 



D. hydei. 



D. melanogaster. 

 Costa Rica: 



Curtonotum sp. 



Stegana sp. 



Scaptomyza vittata. 



Drosophila alfari. 



D. cardini. 



D. caribbea. 



D. florae. 



D. immigrans. 



D. lutzii. 



D. melanogaster. 



D. simulans. 



D. tristani. 



Costa Rica — continued. 



D. willistoni. 

 Cuba: 



Cladochseta nebulosa. 



Stegana sp. 



Leucophenga bimaculata. 



L. frontalis. 



L. maculosa. 



L. obscuripennis. 



Chymomyza procnemis. 



Scaptomyza vittata. 



Drosophila bromelise. 



D. busckii. 



D. calloptera. 



D. cardini. 



D. caribbea. 



D. dubia. 



D. earlei. 



D. flexa. 



D. florae. 



D. hydei. 



D. lutzii. 



D. melanogaster. 



D. metallica. 



D. metzii. 



D. muUeri. 



D. nebulosa. 



Cuba — continued . 



D. poeyi. 



D. ramsdeni. 



D. repleta. 



D. saltans. 



D. similis. 



D. splendida luteipes. 



D. torrei. 



D. willistoni. 

 Dominica : 



Drosophila cardini. 



D. caribbea. 



D. melanogaster. 



D. repleta. 

 Guatemala: 



Drosophila superba. 

 Hispaniola: 



Leucophenga maculosa. 



Chymomyza sp. 



Mycodrosophila projectans. 



Drosophila cardini. 



D. caribbea. 



D. nebulosa. 



D. prognatha. 



D. repleta. 



D. willistoni. 



