TABLE OF CONTENTS. 



PAGE 



Preface 



7 



Introduction 



9 



CHAPTER I. 



Characters of the Species 



13 



Classificatory position of the Rocky Mountain Locust, 13. — 

 How it differs from other species, 14. — Easily confounded 

 with the common Red-legged Locust, 14. — Detailed descrip- 

 tions of both, 15. — Its still closer resemblance to the Atlan- 

 tic Migratory Locust, 22. — Characters of this last, 22. — Spe- 

 cies vs. variety and race, 23. — Comparisons of these three 

 closely-allied species in their early stages, 26. — A green 

 variety of the Rocky Mountain Locust not infrequent, 27. — 

 Purely an American insect, 28. 



The Locust plague in the "Old World," 29.— Extent of its 

 injuries, 30. — Migratory species in Europe, Asia and 

 Africa, 30. — The ravages of the locust in America, 31. — Its 

 earliest visitations, 31. — Injuries on the Pacific Coast, 32. — 

 Injuries east of the Rocky Mountains, 33. — Invasions of 

 1818-19, 33.— Of 1845-49, 34.— Of 1855, 34.— Of 1856, 35.— 

 Of 1837-67, 35, 36.— Of 1866, 36.— Damage the following 

 year, 37.— The invasion of 1873, 38.— That of 1874, 39.— 

 Why so disastrous, 41. — General outlook in the spring of 

 1875, 42. — Severity of the injuries from the young insects 

 that year, 43. — Destitution that prevailed, 44. — Amount of 

 loss sustained, 45. — Destination of departing swarms of 

 1875, 47. —The invasion of 1876, 49.— Eastern limit reached, 

 53. — Omaha conference, 53. 



CHAPTER II. 



Chronological History 



29 



