348 SUPPLEMENT. 



3. Chrysotus exeisus. 



Chrysotus excisus, Aldrich, Trans. Ent. Soc. Lond. 1896, p. 325 \ 

 Hab. Mexico, Teapa in Tabasco (H. H. Smith). — Antilles, St. Vincent l . 

 One male and one female. 



4. Chrysotus picticornis. 



Chrysotus picticornis, Loew, Mori. N. A. Dipt. ii. p. 184 x ; Wheeler, Psyche, 1890, p. 358 a ; 

 Aldrich, Trans. Ent. Soc. Lond. 1896, p. 329 3 . 



Hab. North America, Illinois 1 2 .— Mexico, Atoyac, Frontera, Teapa (H. H. 

 Smith). — Antilles, St. Vincent 3 . 



Three specimens. A common species in the Southern United States. 



5. Chrysotus vividus. 



Chrysotus vividus, Loew, Mon. N. A. Dipt. ii. p. 178 l . 



Hab. North America, Illinois 1 . — Mexico, Xucumanatlan and Omilteme in 

 Guerrero, Cuernavaca in Morelos, Atoyac and Medellin in Vera Cruz, Teapa in 

 Tabasco (H. H. Smith). 



Numerous specimens. The identification is open to some doubt, in view of the fact 

 that Loew describes the cilia of the tegulse as black, while in these Mexican insects 

 they are of a variable brownish colour, in some examples almost white, and in a few 

 of the females almost black. Otherwise the description applies very well. I do not 

 possess a specimen of the species from the United States. 



6. Chrysotus ? 



Hab. Mexico, Chilpancingo in Guerrero (H. H. Smith). 

 A single female, closely related to C. hirsutus, Aldrich. 



7. Chrysotus ? 



Hab. Mexico, Teapa in Tabasco (H. H. Smith). 



One male, resembling C. vividus, Loew, but with pale tegular cilia, and the face 

 decidedly narrowed in the middle. The group is so difficult that I refrain from 

 describing the Teapa insect as a separate species. 



