236 
The Ohio Naturalist. 
[Vol. V, No. 2, 
Tabanus cribellum Osten Sacken. I have seen Townsend’s 
types of guttatulus in Kansas University collection, and have 
compared with Osten Sacken’s figure of cribellum. It is my 
opinion that the two are synonyms and as the latter name is the 
older it would stand for the species. 
The eyes are naked, the antennae reddish with the annulate 
portion of the third segment black and about the length of the 
basal. Wings hyaline, abdomen gray with four browm markings 
on each segment. These markings may be united in varying 
ways. Length about 10 millimeters. 
Specimens from Mesilla Park, N. M., taken by T. D. A. Cock- 
erell. As 1 understand it, Osten Sacken’s types were taken in 
northern Mexico, only a few miles from w'here Townsend procured 
his specimens. 
Tabanus dodgei Whitney. There are two conspicuous white 
stripes on the thorax separated by a wider dark brown stripe, 
w'hich in most specimens is divided for the anterior half of its 
length by a very narrow white line. Exterior to the white stripe 
on each side is a dark stripe follow’ed by gray on the pleura. 
The abdomen is marked by a rather narrow dark brown stripe on 
the median line, followed by a gray stripe of about equal width 
on either side, and these followed by obscure brownish on the 
outer margins. First two segments of antennae red, third black 
with basal prominence rounded. The male is colored like the 
female in all details. The head in both sexes is rather small and 
flattened so that the longitudinal diameter is shorter than in most 
other species of its size. Length 14 to 16 millimeters. 
It is a very distinct species and cannot be confused with any 
others of our fauna. A number of specimens taken at Onaga, 
Kansas, by F. F. Crevecoeur, who has sent me much interesting 
material. 
Tabanus epistatus Osten Sacken. This species averages much 
smaller than affinis, but small sized specimens of the latter are 
much like the larger ones of epistatus. A good character for 
separating the tw’O species may be seen in the palpi. In affinis 
these are long and slender while in the latter they are robust. 
The antennae are usually red with the annulate portion of the 
third segment black. However, there is some variation but in 
all the specimens I have studied the base of the third segment is 
invariably red. The subcallus is often denuded; length 13 to 17 
millimeters. 
The larger specimens, which I cannot separate from the others 
by any constant character, agree in detail with Marten’s descrip- 
tion of californicus. Therefore I am of the opinion that the 
latter should be considered a synonym. 
Tabanus flavidus n. sp. Female: Length 12 to 14 millimeters. 
Eyes naked, antennae red with annulate portion of the third seg- 
