92 



Illustrated Studies 



Fig. 171. 



*&&% 



FlG. 173. — Metamorphosis of flea. 



Fig. 172. — Metamor- 

 phosis of house fly 

 (enlarged). 



Fig. 174. — Louse and 

 its eggs attached to a 

 hair. Natural size 

 and magnified. 



6/oS. sxrjs ■'-•■ S 



v .;.da»iSRa^.- ■-■"•_ ft 



X r*5pj >r"«k 



!!f !' 



" '-. 



,H* V 1 



vr* 





Si I ; ' 



%.\^ 'fsi'v 





1 



FlG. 175. — Bed bug. xs. 



FlG. 176. — Life history of mosquito. 



