121 



1875. EiLEY, C. v.— Idem. 7tb Kep. St. Ent. Mo., pp. 121-196, 



figs. 23-39. Its characters ; natural and chronological his- 

 tory ; habits ; ravages ; predaceous enemies and parasites ; 

 home ; migrations and geographical distribution ; means of 

 preventing its ravages. Injuries to Indian corn, pp. 146^ 

 150, 152. Food plants, 158. 



Thomas, Cyrus. — Idem. Daily Inter Ocean, October 9, 1875. 

 Origin and movements ; hatching grounds and highways on 

 our western frontiers ; means of counteracting their inroads. 



Glover, Townend. — Idem. Rep. Com. Agr. 1874, pp. 125, 

 126, 136, 137. Injury and suffering caused. 



Bethune, C. J. S.— Idem. Rep. Ent. Soc. Ont. 1874, pp, 

 29-42, figs. 30-34. Past history. Plague of 1874. Locust 

 in Manitoba. Description of imago compared to C. femur- 

 riihrum. Means of reducing its ravages. 



1876. Bethune, C. J. !S.— Idem. Rep. Ent. Soc. Ont., 1875, pp. 



45-54. Compiled account of its occurrence and doings in 

 1875. Extracts from Riley's Eigth Report on means of 

 reducing ravages, etc. 



Riley, C. V.— Idem. 8th Rep. St. Ent. Mo., pp. 57-156, figs. 

 39-47. Detailed account of its ravages in Missouri and 

 neighboring states in 1875. Natural history of young; de- 

 finition of the species ; its native home ; migrations and 

 ravages ; compensations that follow their ravages ; natural 

 and artificial means of reducing them. Use of locusts as food- 



1877. Riley, C. V.— Idem. 9th Rep. St. Ent. Mo., pp. 57-124, 



figs. 16-29, Its doings in 1876 in the northern and west- 

 ern states and territories of the Mississippi Valley. De- 

 tailed reports from counties in Missouri. Source of the 

 swarms of 1876; direction, rate, and extent of their flight. 

 Geographical range and that of its allies. How the eggs 

 are laid and hatched. Predaceous enemies and parasites. 

 Experiments to determine the best artificinl means of reduc- 

 ing its ravages. Legislation on the subject by Missouri, 

 Kansas, and Minnesota. Injuries to Indian corn, pp. 63, 

 64, 65. 

 Packard, A. S., Jr.— Idem. 9th Rep. U. S. G. G. Surv. 

 Terr., pp. 591-684. Their occurrence and ravages in Colo- 

 rado, Kansas, Wyoming, Utah, New Mexico, and Nevada. 

 Their northern range ; their invasion in 1876 ; their habits, 

 seasons, and development. Classificatory characters, geo- 

 graphical distribution and migrations ; external enemies and 

 parasites. Preventive measures ; summary of our present 

 knowledge. Meteorological data. 



Thomas, Cyrus.— Idem.— 6th Rep. St. Ent. 111., pp. 44-56. 

 Its invasions and migrations ; extent of hatching ground ; 

 remedial agencies. Injuries to Indian corn, p. 51. 



1878. Riley, Packard, and Thomas.— Idem. 1st Annual Rep. U.' S. 



Ent. Com. An elaborate treatment of the subject, with a 

 consideration of the best means of preventing the injuries 

 and guarding against the invasions of the insect. 



