12 
Psyche 
[March- June 
FURTHER STUDIES OF THE TABANID3E 
OF TRINIDAD, B. W. I. 
By J. Bequaert 
Harvard Medical School and School of Public Health, 
Boston, Mass. 
The publication of my list of Trinidad Tabanidse a few years 
ago (1940, Bull. Ent. Res., 30, pp. 447-453) induced several 
entomologists to a more intensive study of these flies. Dr. E. 
McC. Callan submitted for identification two lots, including all 
specimens in the Department of Entomology of the Imperial 
College of Tropical Agriculture. More recently Dr. Raymond C. 
Shannon, of the International Health Division, The Rockefeller 
Foundation, forwarded to me many specimens obtained by him 
and his associates in the course of their studies on malaria. The 
result is most gratifying and has induced me to draw up a 
revised list of the species known from the island. This was the 
more necessary because recent careful work on the Panamanian 
fauna by Dr. G. B. Fairchild has resulted in certain corrected 
identifications and names. Some of these changes were decided 
upon in personal discussion with Dr. Fairchild, and most of 
them have since been published by him. None of the informa- 
tion given in my earlier paper is repeated here, unless it called 
for correction. 
The number of known Trinidad Tabanidae has risen now 
from 23 to 31 species, 9 species being added. One of the species 
of the earlier list ( Tabanus ochrophilus) was dropped, as the 
specimen on which the record was based is not now available 
for study and was no doubt misidentified. The following 
changes in nomenclature were made. The species formerly listed 
as Chrysops auro guttata is now called C hr y sops pallidefemorata 
Krober. Stibasoma dyridophorum becomes a synonym of S. 
mallophoroides. The older name T. limonus is applied to the 
species formerly called T. viridis. In accordance with G. B. 
Fairchild’s recent work, T. amplifrons is used for the species 
I called T. trilineatus and T. vittiger subsp. guatemalanus for 
