372 ZOOLOGY 



E. PERIODICALS 



Besides " Science " and " Nature," both published by The Macmillan 

 Co., New York, there will be found of especial interest to the zoology 

 student : 



The American Naturalist. A Monthly Journal devoted to the Natural 

 Sciences in their widest sense. Published monthly by Ginn & 

 Co., Boston. Price $4.00 per year. 



This journal is publishing keys for the determination of North Amer- 

 ican Invertebrates. 



F. WORKS ON SPECIAL GROUPS 

 INSECTS IN GENERAL 



The Cambridge Natural History. Vols. V and VI. Peripatus, by A. 

 Sedgwick : Myriapods, by F. G. Sinclair; Insects, Parts I. and II., 

 by David Sharp. Macmillan & Co., London and New York. 

 1895 and 1899. 



Deals especially with Ecology. 



Comstock, J. H. and A. B. A Manual for the Study of Insects. Ithaca, 

 N. Y. : Comstock Publishing Co. 1895. Price $3.75. 



The best systematic treatise (with special reference to economic en- 

 tomology) on Insects of the United States, with keys to families. 



Comstock, J. H. An Introduction to Entomology. Ithaca: Com- 

 stock Publishing Co. 1888. 



Unfinished, but more detailed than the Manual. Treats of Thysannra, 

 Pseudoneuroptera, Orthoptera, Physopoda, Hemiptera, and Neuroptera 

 only. 



Comstock, J. H. Insect Life. An Introduction to Nature Study 

 and a guide for teachers, students, and others interested in out-of- 

 door life. D. Appleton & Co. New York, 1897. 349 pp. Price 

 $2.25. 



Packard, A. S. Entomology for Beginners. Henry Holt & Co., 

 New York. 1888. Price $1.40. 



Packard, A. S. Half Hours with Insects. Boston: C. E. Lauriat. 

 1881. 



