FIG. 453. Venation of a tipulid (Protoplasa fitchii) 

 (After Comstock) 



CU 1 



FIG. 454. Venation of Blepharocera sp. 

 (After Comstock) 



FIG. 455. Venation of a mosquito (Culex sp.) 

 (After Comstock) 



FIG. 456. Venation of a Chironomus sp. 

 (After Comstock) 



FIG. 457. Venation of a soldier-fly (Stratiomyia sp.) 

 (After Comstock) 



322 



