11 



EXPLANATION OF PLATES.* 

 Plate I. 



Figure 1. — Rocky Mountain Locust, Melanoplus spretus, male, four times 

 natural size. 



Figure 2. — Red-legged Locust, 3IeIccnoplun femur-ruhrum, male, four 

 times natural size. For comparison of length of wings, spots on wings, and side 

 view of abdomen, with J/, spretus. 



Plate II. 



Figures. — Long-winged Locust, Dissostelra lonfjipeniils, female, natural 

 size. 



Figure 4. — Differential Locust, Melanox>lus differentialiii, female, natural 

 size. 



Plate III. 



Figure 5. — Two-striped Locust, Melanoplus hlvitalus, female, natural size. 

 Figure 6. — o, Differential Locust ; 6, Two-striped Locust ; showing difference 

 in markings when wings are folded. 



Plate IV. 



Figure 7. — Rocky Mountain Locust, Melanoplus spretus, female, natural 

 size, with wings spread to show spots on fore-wing. 



Figure 8. — Rocky Mountain locust; a, a, a, females laying eggs; b, egg-pod, 

 with broken end, taken from grovind ; e, eggs, taken from pod ; d, e, egg-pods in 

 place below surface of ground ; /, place whei-e an egg-pod is buried. 



Figure 9, a, 6, c. — Stages in growth of young locust ; c shows appearance of 

 wing-pads. 



Plate V. 



Figure 10. — A shows ovipositors of female — a, in natural position; b and 

 c show structure of tips used iti digging. B, «, side view of egg-pod. Natural 

 way of escape of young when hatched is in direction of arrows past d. If d is 

 closed or obstructed, young can force their way directly to surface, as shown by 

 dotted lines at e. 



Figure 11. — a, side view, b, end view, tip of abdomen, showing tubercles, of 

 Rocky Mountain Locust; c, side view, d, end view, of tip of abdomen of Red- 

 legged Locust, showing broad structure like stern of a Vjarge. 



Figure 12. — "Hopper-dozer." See page 7 for instructions as to use. 



* Plate I, figures 1, 2, and plate V, figure 11, are from original drawings made by Miss Ella 

 Weeks, under direction. Plate IV, figures 8, 9, and plate V, figures 10 and 12, are after Riley 

 The remaining figures are from original drawings made by Miss Mary Wellman, for "Common 

 Injurious Insects of Kansas." 



