44 INDEX TO MISSOURI ENTOMOLOGICAL REPORTS. 



Page. 

 The Colorado Potato-beetle Continued. 



traveled, 37 ; principally in the beetle state, and greatly assisted by 

 man, 37 Its migrating habit, 38 Area invaded by it nearly 1,500,000 

 square miles, 38 Causes which limit its spread, 38 Will it reach the 

 Pacific slope ?, 39 How it affected the price of potatoes, 39 The modi- 

 fication it has undergone, 40 A mite parasite added to its natural 

 enemies, 41 Its introduction to Europe, 42 A living specimen found 

 last summer in the Bremen dock yards, 42 Could it live and multiply 

 in Europe ?, 43 Action taken by European governments to prevent 

 its introduction, 44 Consideration of the Kearney "Potato Pest Poi- 

 son ", 45. 



Tli3 Army Worm 47 



Further notes and experiments thereon, 47 T\vo generations produced 

 annually at Saint Louis, and a probable third generation, exceptionally, 

 48 Summary of its natural history, 49. 



The Wheat-head Army -worm 50 



A new enemy to wheat, 50 First complaint of it in the East, 51 First 

 appearance in Kansas, 51 Habits and natural history, 52 The egg 

 differs from that of the Army Worm, 53 Wherein the worm is distin- 

 guished from its destructive cougeuer, 54 T\vo broods each year, 54 

 Natural enemies, 54 Remedies, 55 Descriptive, 55. 



The Rocky Mountain Locust 57 



It continues to interest the people of the West, 57 Previous opinions 

 justified, 57 The invasion of 1876,59 Few in British America, 59 

 Condition of things in Montana, 59 In Wyoming, 59 In Dakota, 

 59 In Minnesota, 60 ; locusts and alkali soil, 61 ; good done by Gover- 

 nor Pillsbury, of Minnesota, 61 In Colorado, 62 In Iowa, 63 In Ne- 

 braska, 64 In Kansas, 65 In Missouri, 66 Flights in opposite direc- 

 tions at the same time, 66 Counties in Missouri that were overrun, 

 67 Red-legged Locust troublesome in East Missouri, 68 Detailed 

 reports from counties in Missouri, 68 Andrew County, 68 Atchison 

 County, 68 Barry County, 68 Barton County, 69 Bates County, 

 69 Beiiton County, 69 Buchanan County, 69 Cass .County, 69 

 Cedar County, 70 Caldwell County, 70 Clay County, 70 Dade 

 County, 70 DeKalb County, 70 Gentry County, 70 Greene County, 

 71 Harrison County, 71 Henry County, 71 Hickory County, 71 

 Holt County, 71 Jasper County, 72 Jackson County, 73 Johnson 

 County, 73 Lafayette County, 73 Lawrence County, 73 McDonald 

 County, 74 Newton County, 74 Nodaway County, 74 Pettis 

 County, 74 Platte County, 74 Polk County, 75 Ray County, 75 

 Saint Clair County, 75 Veruon County, 75 In Indian Territory, 

 76 In Texas, 76 In Arkansas, 76 Destination of the departing 

 swarms of 1875,77 They reached into British America, 78 Source 

 of the swarms of 1876, 79 Eastern line reached, 80 Rate at which 

 the insects spread, 80 Direction of flight, 81 Influence of wind in 

 determining the course of Locust swarms, 81 Locust flights east of 

 the Mississippi, 81 Geographical range of species, 82 Causes which 

 limit the spread of the Rocky Mountain Locust, 83 Flights of Acrid- 

 ium Americanum, 84 Does the female of the Rocky Mountain Locust lay 

 more than one egg-mass, 85 How the eggs are laid, 86 Philosophy 

 of the egg-mass, 87 How the young locust escapes from the egg, 

 88 How it escapes from the ground, 90 Additional natural enemies, 

 91 Animals which destroy the eggs, 91 The Anthomyia Egg-para- 

 site, 92 The Common Flesh-fly, 95 Other undetermined enemies of 

 the eggs, 9 1 .! Insects which destroy the active locusts, 98 Experi- 



