83 



EiLEY, C. v.— Idem. Rep. Com. Agriciiltiire, 1881, pp. 89-106, 

 pi. II and pi. VI, figs. 1-3. Chieiiy from 3d. Rep. U.S. Ent. 

 Com., p. 89-156. 



CoQuiLLET, D. W.— Idem. 11th Rep. St. Ent. 111., pp. 49-64. 

 Description of larva. Habits and life history. Dates moths 

 emerge. Seasons most favorable to its rapid increase. Mi- 

 gratory habit. Finds two distinct races of army worm. 

 Sedentary race rears three broods in one season, and hiber- 

 nates in larval state. Migratory worms are the progeny of 

 moths which were bred in some remote locality and migra- 

 ted to the locality in which the worms appeared. Natural 

 enemies : Exorista leucanicB, Kirk, Microgaster militaris, Walsh ; 

 doubtless also larvie of Galerita janus. Fab., and occasionally 

 the common striped gopher. 



EiLEY, C. v.— Idem. 3d Rep. U. S. Ent. Com., pp. 89-156. 

 Gives names of insects with which it is sometii^^es confounded ; 

 history of its synonymy ; geographical distribution ; capacit 

 injury; past history; specific characters of the egg, larva, 

 pupa, and imago ; sexual differences ; habits and natural his- 

 tory ; time and place of laying eggs ; mode of oviposition ; 

 fertility ; duration of egg state ; habits when young ; duration 

 of larval life; traveling habits; time of appearance; sudden 

 appearance and disappearance. Food plants ; duration of 

 the pupa state ; habits of the moth ; flight ; position when 

 at rest. Number of annual generations normally three, and 

 possibly or exceptionally four, for all points between the 

 Ohio River and the Great Lakes and north to central New 

 York. In the latitude of Washington there are at least 

 five annual generations, and possibly a sixth. Hibernation, 

 Natural enemies : some twenty-five species enumerated. Rem- 

 edies proposed : burning old grass, ditching coal tar, poison- 

 ing, rolling, fencing, and roping. Accounts from corres- 

 pondents. Extended bibliography. 



Forbes, S. A.— Idem. 12th Rep. St. Ent. 111., p. 102, fig. 22. 

 Dates of appearance. Evidence of three distinct broods in 

 central and southern Illinois. Abundance and disappearance 

 due to parasites. Of seventy-six pupae, but one reached 

 maturity. 



24. The Corn Worm. 

 {Heliotkis armiger, Hiibn.) 



1793. Hubner, Jacob.— Eur. Schmett, p. 370 {Teste Guenee.) Original 



description. 

 1842. Freyer, C. F.— Beitr. zur Schmett, III., pi. 203. First figure 



of larva, 

 1844. DupoNCHEL, P. A. J.— Hist. Nat. Lep. France, IV., 316, pi. 119, 



figs. 5, 6. Description of larva. 



