EXPLANATION OF PLATES 
Plate I. Some Minnesota Grasshoppers. 1. Orphulella speciosa. 2. The dif- 
ferential locust, Melanoplus differentialis. 3. The sprinkled locust, Chloealtis 
conspersa. 4. Melanoplus gladstoni. 5. The clear-winged locust, Camnula 
pellucida. 6. The short-winged locust, Stenobothrus curtipennis. 7. The 
pale-green locust, Hesperotettix pratensis. 8. The clouded locust, Encop- 
tolophus sordidus. 9. Phoetaliotes nebrascensis. 10. Melanoplus minor. 
Plate II. Some Minnesota Grasshoppers. 1. Arphia pseudonietana. 2. The 
Carolina locust, Dissosteira carolina. 3. Dissosteira carolina, young stage. 
4. Dissosteira carolina, showing color variation. 5. The two-striped locust, 
Melanoplus bivittatus and red tibia from Melanoplus femoratus. 6 and 7. 
Melanoplus bivittatus, three immature forms. 8. The red-legged locust, 
Melanoplus femur-rubrum. 
Plate III. Some Minnesota Grasshoppers and_ Crickets. 1. Spharagemon 
aequale. 2. The slender meadow grasshopper, Xiphidium fasciatum. 3. The 
small, striped ground cricket, Nemobius fasciatus. 4. A cricket-like grass- 
hopper, Ceutophilus sp. 5. Xiphidium nigropleurum. 6. The clouded 
locust, Encoptolophus sordidus, female. 7. The lesser migratory locust, 
Melanoplus atlanis, and sectional view of last segment of male. 8. Melan- 
oplus collinus, with dorsal view of male genital plates of M. luridus on 
reader’s left and M. collinus on right. 
Plate IV. Some Minnesota Grasshoppers. 1. A. Chloealtis conspersa. B. Di- 
chromorpha, gray form, F. L. Washburn. 2. Egg pod of Chloealtis con- 
spersa, C. W. Howard. 3. Mecostethus platypterus, F. L. Washburn. 4. Ar- 
phia sulphurea, F. L. Washburn. 5. Hippiscus zapotecus, F. L. Washburn. 
6. Mestobregma cinctum, F. L. Washburn. 7. Melanoplus dawsoni, F. L. 
Washburn. 8. Eggs of Melanoplus bivittatus, about August 1, C. W. 
Howard. 
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