l6 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Insect Life. 7 volumes with index. Published periodically by the U. S. 

 Department of Agriculture, Washington, D. C. 1888-1895. 



Bulletins 1-33; N. S., 1-89, Bureau of Entomology: iSps-date. Index 

 volumes 1-30. Bulls. 24 and 81 contain bibliography. Also Circulars 

 1-96, Technical Bulletins 1-14, and Farmers' Bulletins. Published by 

 U. S. Department of Agriculture, Washington, D. C. 



Noxious Insects of New York, by A. Fitch, Reports 1-14. Published by 

 the New York Agricultural Society. 1856-1870. 



Reports of State Entomologist of New York. 22 Volumes. 1-13 by J. A. 

 Lintner, 13-22 by E. P. Felt. 1882-date. 



Reports on Insects of Illinois. 23 volumes. Vol. i by B. D. Walsh, 1867. 

 2-5 by Wm. Le Baron, 1868-1874. 6-9 by C. Thomas, 1875-1880. 10-22 

 by S. A. Forbes, 1880-1905. 



Reports and Bulletins of the State Agricultural Experiment Stations 

 contain much entomological matter. The publications of the Con- 

 necticut Station at New Haven contain the nine reports of the State 

 Entomologist (1901-1909) which deal with Connecticut insects. 



Journal of Economic Entomology (bi-monthly, started in 1908). Official 

 organ of the Association of Economic Entomologists, containing the 

 proceedings of the association. (Previously the proceedings were 

 printed in Insect Life, and as Bulletins of the Bureau of Entomology, 

 U. S. Department of Agriculture, Washington, D. C.) 



The publications here listed do not include those of a special 

 nature such as the monographs of separate orders or families 

 of insects. These will doubtless be listed in the future publica- 

 tions referring to the various groups. Any one wishing to learn 

 about these special lists and monographic papers may consult 

 the bibliographies in Howard's Insect Book and in Bulletins 

 24 and 81 of the Bureau of Entomology. 



ABUNDANCE OF INSECTS. 



Insects are of small size, and are among the most abundant 

 of animals. Not only are the individuals very numerous, but 

 the number of species is probably greater than that of all other 

 land animals. About 400,000 species have been described through- 

 out the world, and it has been estimated that several million 

 species exist. For a given locality the number of species is 

 much less, yet some parts of the world are almost wholly un- 

 explored as regards insect life. The number of species that 

 occur in Connecticut is of course much smaller than that of the 

 whole continent, and may be expected to aggregate between 

 6,000 and 10,000. 



