EXPLANATIO?? OF PLATE LXII. 



Fig. 1. Rocky Mountain locust. — a, a, a, female in different positions, ovipositing ; b, 

 egg-pod extracted from the ground, with the end broken open, showing how the eggs 

 are arranged ; c, a few eggs lying loose on the ground ; d, e show the earth partially 

 removed to illustrate an egg-mass already in place and one being placed ; / shows 

 where such a mass has been covered up. — After Riley. 



Fig. 2. Rocky Mountain locust.— Front and side view of the embryo surrounded by 

 the inner embryonal membrane or amnion. Original : drawn by J. H. Emerton. 



Fig. 3. Rocky Mountain locust. — a, a, newly-hatched larvae ; h, full-grown larvae ; c, 

 pupa.— After Riley. 



Fig. 4. Rocky Mountain locust. — Process of acquiring wings ; a, pupa with skin just 

 split on the back ; b, the adult extruding ; o, the same nearly out ; d, the same with 

 wings expanded ; e, the same with all the parts perfect. — After Riley. 



Fig. 5. a, Rocky Mountain locust ; b, the common red-legged locust. — After Riley. 



Fig. 6. Rocky Mountain locust. — Terminal abdominal ring ; a, side view ; b, c, hind 

 and top view of the same. — After Riley. 



Fig. 7. Red-legged locust. — Lettering and explanations the same as in Fig. 6. — After 

 Riley. 



