- in 



cu 2 cu 1 



FIG. 458. Venation of a cecidomyiid gall-gnat 

 (After Comstock) 



4+G 



in 



1*2 



FIG. 459. Venation of a fungus-gnat {Mycetophilidae} 

 (After Winnertz, adapted from Comstock) 



la cu 2 



FIG. 460. Venation of a bombyliid (Pentarbes capita] 

 (After Comstock) 



sc 



-I*-? 



FIG. 461. Venation of a bot-fly (Gastrophilits sp.) 



(After Comstock) 

 3 2 4 



