190 



KNOWLEDGE. 



June, 1915. 



Figure 170. Scab Mite (Psoroptes coniiiiunis 

 var. equi). 



''^itnj 



.^ 



Figure 171. A male Plague Flea. 



Figure 172. A Buffalo Knat (Simnliiiin ineridiotiale). 3 



Figure 17J. Eyg of Horse Hot Fly 

 {Gastropliiliis equi). 



(From " Insects and Man." by C. A. Ealand. By the courtesy of Messrs. Grant Richards, Ltd.) 



(.See page 191.) 



