Bull. 1089, U. S. Dept. of Agriculture. 
Plate XXIV. 
Fig. 
-Yearling Skin Infested with Warble Grubs. 
About 1,003 larvae of the warble fly (Ocdcmaqcna tarandi) were counted on the back. "With such 
a number the hide was practically riddled, one hole being punctured by each grub. More 
parasites were counted on the right side than on the left. 
\ 
&*& < 
<3* # 
Eft* 
x K 
Fig. 2. — Near View of Above Skin. 
In a line along the backbone the skin is free from grubs, explained, no doubt, by the pressure 
and movements of the bone. 
