Plate XX 



Fig. 1. The Wheat Bulb Worm, Meromyza americana, adult fly. Mag- 

 nified twelve diameters. 



Larva of same. Magnified sixteen diameters. 



Work of larva (a), larva (&), and pupa (c) of same. (/Riley, 

 Rep. State Ent. Mo.) 



Pupa of same, dorsal view. 



Pupa of same enclosed in puparium. Magnified thirty diameters. 



Cottonwood Dagger Caterpillar, Apatela populi. (Riley, Rep. 

 State Ent. Mo.) 



