SOURCES OF INFORMATION 75 



Also discusses predaceous and parasitic animals which 



prey upon the Gypsy Moth. 

 HART, C. A. 



1895. On the Entomology of the Illinois River and Adjacent 

 Waters. Bull. HI. State Lab. Nat. Hist., Vol. IV, 

 pp. 149-284. 

 Keys to immature stages of aquatic insects and many 



biological observations. 

 HENSHAW, S. 



1887. The Entomological Writings of Dr. Alpheus Spring 

 Packard. U. S. Dept. of Agr., Div. Ent., Bull. 

 No. 16. pp. 49. 

 Biological observations. 



1889-96. Bibliography of the More Important Contributions 

 to American Economic Entomology, Parts I-V, 

 and index. U. S. Dept. of Agr., Div. Ent. 



HUBBARD, H. G. 



1885. Insects Affecting the Orange. U. S. Dept. Agr., 

 Div. Ent. pp. 227. 



JOHANNSEN, 0. A. 



1903, 1905. Aquatic Nematocerous Diptera. N. Y. State 

 Mus., Bull. No. 68, pp. 328-448; Bull. No. 86, 

 pp. 76-327. 



Immature stages of several families are rather fully 

 treated and valuable references on life histories given. 



MAcGlLLIVRAY, A. D. 



1903. Aquatic Chrysomelidse and a Table of the Families of 

 Coleopterous Larvae. Bull. No. 68, N. Y. State 

 Mus., pp. 288-331. 

 Gives references to the most important papers on the 



immature stages of beetles. 

 NEEDHAM, J. G., and BETTEN, C. 



1901. Aquatic Insects in the Adirondacks. Bull. No. 47, 



N. Y. State Mus., pp. 383-612. 



Keys to orders to immature aquatic insects ; keys to 

 Mayfly and dragon-fly nymphs. 



