A LIST OF WORKS ON NORTH AMERICAN ENTOMOLOGY. 
INTRODUCTION. 
This list of works on North American insects is a revision of 
Bulletin No. 24 (new series), together with the additional titles 
that have been published since the issuance of that bulletin (1900). 
These additions are very extensive in some of the orders; indeed, in 
many families the recent literature has completely replaced all that 
before treated of the family in this country. The appearance of 
Wytsman’s Genera Insectorum has added many papers of the great- 
est importance to the systematist. The widening importance of 
entomology has shown that almost any group hitherto of little eco- 
nomic value may suddenly become of great importance. Therefore 
it is useful to keep posted on all systematic work. 
This list is intended to aid the student in such systematic study 
as is now a necessary qualification for economic work. 
A new chapter has been added, namely, titles of value in medical 
entomology. 
COMPREHENSIVE WORKS MOST USEFUL FOR THE STUDY OF 
NORTH AMERICAN INSECTS. 
Say, THomas.—Complete writings on the entomology of North Amer- 
ica; edited by J. L. Le Conte. 2 vols. New York, 1859. 
Principally descriptions of new species; contains a glossary to entomo- 
logical terms. Now out of print. 
Comstock, J. H.—A manual for the study of insects. Ithaca, N. Y., 
1895. 
Packarp, A. S.—Guide to the study of insects. New York. Many 
editions. (First edition, Salem, 1869.) 
—— A text-book of entomology. New York, 1898. 
Anatomy and morphology. 
Kexioce, V. L.—American insects. New York, 1905, pp. 674, many 
figures. Second revised edition, American Nature Series, 1908. 
Fotsom, J. W.—Entomology, with special reference to its biological 
and economic aspects. Philadelphia, 1906, pp. 485, many figures. 
Howarp, L. O.—The insect book. New York, 1901, pp. 428, pls. 48. 
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