54 THE HESSIAN FLY IN THE UNITED STATES. 
(84) Ormerod, Eleanor A. The Hessian Fly (Gecidomyia destructor) in Great 
Britain : being observations and illustrations from life. With means of pre- 
vention and remedy. ^Reports of the Department of Agriculture, U. S. A. 
< London, 1886. 
(85) Ormerod, Eleanor A. The Hessian Fly. ^Entomologist, October, 1887, vol. 
20, pp. 262-264. 
Distribution in England, and other notes. 
(86) Ormerod, Eleanor A. Parasites of the Hessian Fly (Cecidomi/ia destructor 
Say). <Entomologist, December, 1887, vol. 20, pp. 317-318. 
(87) Osborn, H. Note on Hessian Fly. <College Quarterly, September, 1880, vol. 3, 
p. 51. 
Ravages of Cecidomyia destructor. 
(88) Osborn, H. Notes on injurious insects. <Bull. No. 33, Iowa Agric. Exp Sta., 
1896, pp. 594-605, figs. 5. 
Treats of several insects, among them the Hessian fly. 
(89) Osborn, H. Notes on the entomological events of 1896 in Iowa. <Troc. Assoc. 
Econ. Entom., Bull. No. 6, u. s., Div. Ent., U. S. Dept. Agric, 1896, pp. 78-80. 
Brief notes on Cecidomyia destructor, and several other insects. 
(90) Packard, A. S. The Hessian fly, its ravages, habits, enemies, and means of 
preventing its increase. <Bull. U. S. Ent. Com., No. 4, 20 May, 1880, pp. 
43, pis. 1-2, map, fig. 1. See : Amer. Ent., 1880, vol. 3, n. s., Vol. I, May, pp. 118- 
121, June, pp. 140-241, figs. 46; Amer. Nat., August, 1880, vol. 14, pp. 586-587. 
Reprinted with additions, 3d Rept. U. S. Entom. Com., pp. 198-248 (1883). 
(91) Paspelow, W. On the life history of the Hessian fly. <lllustrierte Zeit- 
schrift fur Entomologie, April 1, 1898. 
(92) Powell, S. [Letter relative to the Hessian fly.] <Amer. Museum, September, 
1788, vol. 4, pp. 244-245. 
(93) Riley, C. V. Fighting the Hessian fly. <N. Y. Tribune, 18 July, 1877. 
Reprint: Colman's Rural World, 5 December, 1877. 
Habits, seasons, parasites, introduction, spread, and ravages of, and means against, 
Cecidomyia destructor; description of eggs and larva. 
(94) Riley, C. V. Insects affecting clover. <N. Y. Tribune, 14 May, 1879. 
Habits, ravages of, and means against Hylesinus trifolii and Cecidomyia leguminicola; 
prior observations upon the same; characters distinguishing C. leguminicola from C. 
(Diplosis) tritici and C. destructor. 
(95) Riley, C. V. Report of the entomologist. <Ann. Rept. (U. S.) Commissioner 
Agric. for 1878, 22 November, 1879, pp. 207-257, + 1 p., expl. of pi., pis. 1-7. 
Separate: Washington, October, 1879, pp. 52, -f 1 p., expl. of pi., 7 pis. 
Notice: Gardner's Mo. and Hortic, November, 1879, v. 21, pp. 349-350. 
(96) Riley, C. Y. The Hessian fly. <Amer. Nat., September 9 (23 August), 1881, v. 
15, p. 750. 
Extensive damages done by Cecidomyia destructor in Illinois and Missouri; its abund- 
ance in the Western prairie States in 1881. 
(97) Riley, C. V. Effect of drouth on the Hessian fly. <Amer. Nat., November 
(28 October), 1881, vol. 15, p. 916. See: N. E. Farmer, 10 December, 1881; 
Farmer's Review, 15 December, 1881. 
Hot and dry weather dries up and kills Cecidomyia destructor and its parasites. 
(98) Riley, C. V. Entomological notes of the year. <Prairie Farmer, 24 Novem- 
ber, 1883, v. 55, S. b. No. 42, pp. 86-87. Cecidomyia destructor in Illinois. 
(99) Riley, C. Y., et al. Third report of the United States Entomological Commis- 
sion, relating to the Rocky Mountain locust, the Western cricket, the army- 
worm, cankerworms, and the Hessian fly; together with descriptions of 
larva of injurious forest insects, studies on the embryological development 
of the locust and other insects, and on the systematic position of the Orthop- 
