Insect Migraiiuiis in Tropical America. 165 



Migration of Tabanidae (Diptera) from Venezuela to 

 Trinidad. 



Dr. E. de Verteuil, who lives at Palo Seco on the south 

 coast of Trinidad, infonns me that some years ago, about 

 the end of June or beginning of July, he was out boating 

 about two miles ofl: the south coast, and large numbers 

 of horse-flies {Tabanidae) were seen flying full speed over 

 the water towards Trinidad. 



The Venezuelan coast is at this point about twelve miles 

 away. 



The above records make not the slightest claim to com- 

 pleteness, particularly with regard to references to other 

 published records. In Trinidad many of the best-known 

 periodicals are not available, and those references that 

 are given are quoted largely from the local journals in 

 order to bring them more readily before the student of insect 

 migration. 



Trinidad. Deconber 1919. 



