270 MONTANA EXPERIMENT STATION. 



PLATE IV. 



Lines indicate the length of the body from front of head to tip 

 of wings or abdomen, whichever extends farther. 



Fig. I, Lesser Migratory Locust, Melanoplus atlanis Riley, 

 female. 



Fig. 2, Same, male. 

 " 3, Big-headed Grasshopper, Aulocara elliotti Thomas, 

 female. 



Fig. 4, Same, male. 



PLATE V. 



Lines indicate the length of the body from front of head to tip 

 of wings or abdomen whichever extends farther. 



Fig. I, Yellow-winged Locust, Cami:zw7a pe//wcjc/a Scud, female 

 " 2, Same, male. 



" 3, TAvo-striped locust, Melanoplus bivittatus Say, female. 

 " 4, Same, male. 



* PLATE VI. 



Lines indicate the length of the body from front of head to tip 

 of wing or abdomen whichever extends farther. 

 Fig. I, Melanoplus dawsoni Scudder, female. 

 " 2, Hippiscus neglectus Thomas, temale. 

 " 3, Chortophaga viridifasciata DeG., female. 

 ■ ** 4, Encoptolophus sordidus Burm, female. 



PLATE VII. 



Lines indicate the length of the body from front of head to tip 

 of wings or abdomen whichever extends farther. 

 Fig. I, Spharagemon aequale Say, female. 



" 2, Melanoplus spretus Uhler, female. 



" 3, Arphia tenehrosa Scudder, female. 



" 4, Acrolophitus hirtipes Say, female. 



PLATE VIII. 



Lines indicate the length of the body from front of head to tip 

 of abdomen or wings whichever extends farther. 



Fig. I Dissosteira Carolina Linn., female. 

 '- " 2, Cordillacris occipitalis Thomas, female. 



" 3, Egg mass of M. bivittatus, about three and one-half 

 times natural size . 



Fig. 4, Same with the surface removed. 



