
596 THE FAUNA OF MONTANA TERRITORY. 
side view; from the collection of Mr. F. G. Sanborn), which 
resembles the ox Bot-fly in the larval state. Its habits are 
not known, though the young of other species infest the 
opossum, ali hare, etc., living in subcutaneous tumors. 
— To be concluded. 

THE FAUNA OF MONTANA TERRITORY. 
BY J. G. COOPER, M.D. 

(Continued from page 538.) 
Il. BIRDS. 
Turkey Buzzard (Oathartes aura). Occasionally seen 
through the Rocky Mountains, but not very common. 
Picron Hawk (Falco columbarius). I saw no Pigeon 
Hawks until I reached Coeur d’Aleñe Mission, where I ob- 
tained the very fine specimen preserved. 
Sparrow Haws (Falco sparverius). Common in all open 
regions. 
Mexican Hawk (Accipiter Mexicanus). No. 92 (6 P): 
Bitterroot river, September 2. Length, 16.50; extent, 
27.50; wing, 9. Iris and feet greenish yellow. This speci- 
men and the next would be supposed to be of the same spe 
cies, but their dimensions differ too much, and do not agre® 
well with those of either of the three Accipitres, in which 
“size is a specific character.” (Cassin). 
Smarp-sHinnup Hawk (A. fuscus). No. 82 (9?) ~ 
terroot river, August 30,1860. Length, 14; extent, 26.15; 
- wing, 5.50. The sex of these last two specimens being of 
certain on account of their youth, I can only guess oO 
from their dimensions, and the wing in this one © very 
short, even for a male bird. ky 
Hawks were rather scarce during my stay in n the leyst 
Mountains, the older birds having probably left the -E 

