58B 



ZOOLOGY 



SECT. 



House-flies and Blow-flies, Bot-flies (Fig. 474), Crane-flies, and 

 "Daddy-long-legs." 



f 







FIG. 473. Pulex (mosquito) and larva. 

 (After Gueriii and Perclierou.) 



FIG. 474. Bot-fly of the horse (Gastro- 

 philus eqiii). , mature insect ; I, 

 egg attached to a hair ; c, <i, and e, stages 

 in the larval development. (After Brehm.) 



ORDER 6. LEPIDOPTERA. 



Insects with both pairs of wings well developed and covered 

 with scales (modified hairs). The maxillse are modified to form 



li'itturfly (Pieris),with cateiinllar and chrysalis stages. (After Guerin and Percheron.) 



