THE WESTEE3T CABBAGE FLEA-BEETLE. 21 



LITERATURE CITED. 



(1) Riley, C. V. 



1884. report op the entomologist. In Rept. U. S. Dept. Agr. 1884, p. 

 28.5-418, 10 pi. 



(2) COCKERELL, T. D. A. 



1889. injurious insects of custer county. In Fifth. Rept. Colo. Biol. 

 Ass., Jan. 9. 



(3) Horn, George H. 



1889. A SYNOPSIS OF THE HALTICINI OF BOREAL AMERICA. I'll Trans. Am. 



Ent. Soc, v. 16, p. 163-320, 7 pi. 



(4) Howard, L. 0. 



1898. INJURY BY THE WESTERN FLEA-BETTLE, PHYLLOTRETA PUSILLA HORN. 



InJJ. S. Dept. Agr. Div. Ent. Bui. 10 (n. s.i, p. 92-93. 



(5) Forbes, S. A., and Hart, 0. A. 



1900. THE ECONOMIC ENTOMOLOGY OF THE SUGAR BEET. Univ. 111. Agr. 



Exp. Sta. Bui. 60, p. 397-532. 11 pi., 97 figs. 



(6) Chittenden, F. H. 



1903. A BRIEF ACCOUNT OF THE PRINCIPAL INSECT ENEMIES OF THE SUGAR 



beet. IT. S. Dept. Agr. Div. Ent. Bui. 43. 71 p., 65 figs. 



(7) Cooley, R. A. 



1906. biological department. In 12th. Ann. Rept. Mont. Agr. Coll., 1905, 

 p. 255-273. 



(8) [Chittenden, F. H.] 



1909. insects injurious to truck crops. In U. S. Dept. Agr. Ybk. 1908, p. 

 570-574. 



(9) Lefroy, H. M. 



1914. contributions from, the wisley laboratory, xxm. — a trap 

 for turnip-fly. In Journ. Roy. Hort. Soc. Engl, v. 40, pt. 2, p. 

 269-271. 



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