Plate XXI 



Fig. 1. Red Loeust-mite, Tromhidium locusi<innn : a, mature larva on 

 wing of locust ; h, pupa ; c, adult male ; d, adult female ; e, 

 pupal claw and thumb ; /, pedal claw ; g, one of the barbed 

 hairs; 7;, striations on the larval skin; c and d enlarged as 

 indicated. (Riley. Rep. U. S. Ent. Comm.) 



Fig. 2. The same: a, female with her eggs; h, newly hatched larva (nat- 

 ural size indicated by dot within the circle) ; e, egg; d and 

 e, empty egg-shells. (Riley, I.e.) 



Fig. 3. "White-faced Hornet. Tcspfi macidafd. (J. B. Smith. Ins. of 

 X.J.) 



Fig. 4. Ground-beetle, Lehia yraudis. (After Felt, Mem. X. Y. State 

 Mus.) 



