1946] 
53 
Tabanidae of Colombia 
Zoology, the United States National Museum (through Dr. 
A. Stone), the Academy of Natural Sciences of Philadelphia 
(through Mr. E. T. Cresson, Jr.), and the American Museum 
of Natural History (through Dr. C. H. Curran). Much of it 
was of our collecting; the remainder being obtained by J. V. 
Acuna, P. Allen, W. A. Archer, D. Augustine, M. Bates, J. 
Boshell M., M. A. Carriker, E. H. Chapin, H. Daniel, P. Dar- 
lington, j. H. Egbert, G. B. Fairchild, F. L. Gallego, A. Gast, 
C. C. Gowdey, B. Guevara Amortaqui, W. H. W. Komp, B. 
Losada S., W. M. Mann, E. and H. Osorno, F. Otoya, L. Patino- 
Camargo, Romulo Patino, G. Salt, H. F. Schwarz, H. Viereck, 
and N. Weber. We are indebted to Dr. Graham Fairchild for 
many favors, particularly for assistance in the case of certain 
critical species. Some of the specimens here listed were included 
in his papers on the Panamanian fauna (1939 to 1943) ; others 
were mentioned in the senior author’s publications on the 
Tabanidae of the Antilles and Trinidad (1940 to 1944). 
The localities are grouped into the major political divisions 
(Departments and Intendencias), which are enumerated in 
alphabetical sequence. 
Key to Genera 
1. Hind tibiae with apical spurs. Subcosta always bare 
both above and below. Labella always with shiny 
sclerotized plates. Subepaulet bare, without macro- 
trichia. Subfamily Pangoniince 2. 
Hind tibiae without apical spurs. Subcosta generally 
hairy, at least with some hairs beneath. Subfamily 
TabanincE 9. 
2. First two antennal segments elongate, together often as 
long as or longer than third. Third antennal seg- 
ment consisting of a long basal part (which some- 
times shows superficial rings) and four terminal 
annuli. Proboscis short, seldom exceeding the height 
of the head Chrysops. 
First two antennal segments short, seldom equalling 
together half the length of the third. Third antennal 
segment consisting of five to eight divisions. Pro- 
boscis often elongate 3. 
3. Third antennal segment consisting of a long basal part 
and four terminal annuli. Proboscis short. Wings 
