40 PAPERS ON APHIDID^. 



BIBLIOGRAPHY. 



trij'oiii Moiiell. 



1882. MoNELL. J. T.— Can. Ent.. vol. L4, p. 14, Jan. 

 Original de.seription of Callipterus trifolii. 



1891. Williams, T. A.— Spec. Bui. 1, Univ. Nebr., Dept. Ent., ]>. 8, July 8. 

 Lists Callipterus trifolii from Trifolium pratense. 



1892. OsBOHN, 11.— Proc. la. Arad. Sci., vol. I, pi. 2, p. 129. 

 Reports this species as Callipterus sp., from Iowa. 



1893. OsBOHN, 11., ANiJ V. A. SiRKiNE. — Proc. la. Acad. Sci., vol. 1, pt. 3, p. 98. 

 Reports Callipterus trifolii abundant in Trifolium pratense in autumn. 



1901. Sanderson, E. D.— Twelfth Ann. Rept. Del. Agr. Exp. Sta., 1900 (1901), 



p. 207. 

 Reports occurrence of Callipterus trifolii on clover in Delaware. 



1906. Sanborn, ('. E. — Kansas Univ. Sci. Bui., vol. 3, no. 8, pp. 251, 252, and 262, 



April. 



Lists Callipterus trifolii from Trifolium sp. and T. pratense. 



1908. Davis, J. J. — Anii. Ent. Soc. Amer., vol. 1, p. 256, figs., Dec. 

 History of Callipterus trifolii, its distribution, and description of various stages. 



1909. FoLsoM, J. AV.— Bnl. 134, 111. Agr. Exp. Sta.. p. 175, fig.><. (Also in 25th Kept. 



111. State Ent., p. 103, figs.) 

 Treats Callipterus trifolii under the following headuigs: Distribution, description, life-history studies, 

 natural enemies, and bibliography. 



1910. Davis, J. J.— Journ. Ecou. Ent., vol. 3, p. 419, Oct. 

 Lists Callipterus trifolii from Illinois. 



1910. Gillette, C. P.— Jouru. Ecou. Ent., vol. 3, ]>. 369, Aag. 

 Lists Myzocallis trifolii from Lansing, Mich., Geneva and Albany, N. Y., and Washington, D. C. 



1910. Smith. .1. B.— Ann. Rept. N. J. State Mus., 1909 (1910), p. lid. 

 Lists Callipterus trifolii from New Jersey. 



1911. Williams, T. A.— Univ. Studies, vol. 10, no. 2, April, 1910 (1911). ]>. 32. 

 Describes apterous and winged viviparous females of Callipterus trifolii collected at Ashland, Nebr., on 



Trifolium pratense. 



1912. Morrison, IL—Fifth Ann. Rept. State Ent. Ind., 1911-1912, p. 216. 

 Reports Callipterus trifolii as common at McCordsviUe, Ind. 



maculatus Buckton. 



1899. Buckton, G. B— Indian Mus. Notes, vol. 4, p. 277. 

 Original description of Chailophorus maculatus. 



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