sc 



FIG. 437. Diagram of wings of 



Hepiahis gracilis, showing jugum 



(/) and similarity of venation of 



fore- and hind-wings 



(After Comstock, from Kellogg) 



cs 



FIG. 438. Venation of a tortricid 

 moth (Cacoecia cerasivorand) 



(After Comstock, from Kellogg) 



FIG. 439. Venation of a pyralid moth 

 (Pyralis farinalis) 



cs, costal vein ; sc, subcostal vein ; r, radial 

 vein ; ;;z, medial vein ; c, cubital vein ; a, 

 anal vein. Note the hairlike projection, the 

 fraenulum, at the base of the hind-wing. 

 This fits into a little pocket on the fore- 

 wing. (After Comstock, from Kellogg) 



FIG. 440. Venation of a saturniid 

 (Bombyx mori) 



(After Comstock, from Kellogg) 



