Plate XX 



Fig. 1. The Wheat Bulb Worm, Meroynyza amcricnna, adult fly. Mag- 

 nified twelve diameters. 



Pig. 2. Larva of same. Magnified sixteen diameters. 



Fig. 3. Work of larva {a), larva (&), and i)upa (c) of same. (Riley, 

 Rep. State Ent. Mo.) 



Fig. 4. Pupa of same, dorsal view. 



Fig. 5. Pupa of same enclosed in puparium. Magnified thirty diameters. 



Fig. 6. Cottonwood Dagger Caterpillar, Apatcla populi. (Riley, Rep. 

 State Ent. Mo.) 



