THE PEA APHIS WITH RELATION TO FOEAGE CROPS. 63 



1909. Barre, H. W., and Conradi, A. F. Treatment of plant diseases and inju- 

 rious insects in South. Carolina. S. C. Agr. Expt. Sta., Bui. 141, 52 p., 

 lfig. 

 Page 41. Means against green pea louse. 



1909. [Bureau of Entomology.] The principal injurious insects of the year 1908. 

 In U. S. Dept. Agr. Yearbook f. 1908, p. 567-580. 

 Page 571. Macrosiphum pisi was more injurious than for many seasons. 



1909a. Chittenden, F. H. The pea aphis. U. S. Dept. Agr., Bur. Ent., Circ. 43, 

 ed. 2, 10 p., 7 fig., Feb. 25. 

 Revised account of an earlier edition. See 1901, Chittenden. 



1909b. Chittenden, F. H. Insects Injurious to Vegetables. 262 p., 163 fig., New 

 York. 

 Page 114. Concise account of Nectarophora pisi as a pest to garden peas. 



1909. Crawford, J. C. Notes on some Chalcidoidea. In Canad. Ent., v. 41, no. 3, 

 p. 98-99, March. 



Describes "Megorismus Fletcher!" n. sp., which was reared from Ncctaropliora pisi at 

 Ottawa, Canada. 



1909. Davidson, W. M. Notes on Aphididae collected in the vicinity of Stanford 

 University. In Join. Econ. Ent., v. 2, no. 4, p. 299-305, August. 



Page 304. Reports Macrosiphum pisi from Urtica holoscricca and Lathyrus. (The speci- 

 mens from Urlica have been examined by the writer and prove not to be pisi. J. J. D.) 



1909. Folsom, J. W. The insect pests of clover and alfalfa. Univ. 111. Agr. Expt. 

 Sta., Bui. 134, p. 113-197, 35 fig., 2 pi., April. Also in 25th Rpt. State 

 Ent. 111., p. 41-124, 35 fig., 2 pi. 



Page 138. Important contribution, including distribution of the insect, its food plants, 

 injury, descriptions, life history, habits, natural enemies, control, and bibliography of 

 important literature. 



1909. Gibson, Arthur. Insects of the year 1908 at Ottawa. In 39th Ann. Rpt. 

 Ent. Soc. Ontario f. 1908, p. 116-120, fig. 31-32. 



Page 119. Nectarophora pisi reported abundant on field and sweet peas. Notes parasite 

 reared. 



1909. Hunter, S. J. The green bug and its natural enemies. Univ. Kans. Bui., 

 v. 9, no. 2, 221 p., 66 fig., 3 pi., folded tables 31-33. 



Page 154. Unsuccessful experiments attempting to parasitize Macrosiphum. trifolii with 

 Lysiphlebus tritici. (Identification of the aphid doubtful. J. J. D.) 



1909. Jar vis, CD. Control of insects and of plant diseases. Storrs Conn. Agr. 

 Expt, Sta., Bui. 56, p. 220-282, pi. 5-11, April. 

 Page 258. Remedies against pea louse. 



1909. Newell, Wilmon, and Rosenfeld, Arthur H. Some common insects inju- 



rious to truck crops. State Crop Pest Comm, of La., Cir. 27, p. 93-131, 

 21 fig., July. 



Page 108. Brief account of Macrosiphum pisi, including remedies and enemies. 



1909. Swenk, Myron H. The principal insects injurious to horticulture during 

 1908-1909. In 40th Ann. Rpt. Nebr. Hort. Soc. f. 1908 and 1909, p. 75- 

 128, 16 pi. 

 Page 104. Nectarophora destructor reported injuring sweet peas. 



1910. Bethune, C. J. S. Observations on Ontario insects in 1909. In 40th Ann. 



Rpt. Ent. Soc. Ontario f. 1909, p. 63-67. 

 Page 63. Garden peas attacked by plant lice. 



