Bul. 597, U. S. Dept. of Agriculture. 
PLATE III. 
PROTECTION FROM BoT FLIES. 
Upper.—Horses assembled for protection during ovipositions of Gastrophilus haemorrhoidalis. 
Center.—A method of protecting lips from ovipositing G. haemorrhoidalis. Lower.—Protect- 
ing under jaws from ovipositing G. nasalis. (Original.) 
