( xxxiii ) 



Collins (C. W.). Dispersion of Gipsy-moth larvae by the wind. 

 [U. S. Dept. Agric, Bureau Entom., Bull. No. 273, 1915.] 



U. S. Dept. Ayric. 



[See Burgess (A. F.).] 



Cook (F. C). Further experiments in the destruction of Fly larvae iu horse 

 manure. 

 [U. S. Dept. Agric, Bureau Entom., Bull. No. 245, 1915.] 



U. S. I)ept. Ayric. 



Craiohead (F. C). Larvae of the Prioninae. 



[U. S. Dept. Agric, Bureau Eutom., Report No. 107, 1915.] 



U. S. Dept. Ayric. 



Crawford (D. L). A Monograph of the jumping Plant-lice or P.syllidae 

 of the New World. 

 [Smithsonian Inst. U. 8. Nat. Mus., Bull. No. 85, 1914.] 



(J. C). Descriptions of new Hymeuoptera. No. 9. 



[Proc. U. S. Nat. Mus., Vol. XLVIII, 1915.] 



The Smithsonian Institution. 



CniDDLE (N.). The Hessian-fly and the western Wheat-stem Saw-fly in 

 Manitoba, Saskatchewan and Alberta. 

 [Dominion Canada, Dept. Agric, Ent. Branch, Bull. No. 11, 1915.] 



Canad. Dept. Ayric. 



Crosby (C. R.) and Leonard (M. D.). The Tarnished Plant-bug (I.i/yis 

 jvatensis, Linn.). 

 [Cornell Univ., Agric. Exper. Station College Agric, Dept. Entom., 

 Bull. No. 346, June 1914.] Cornell Colleye Ayric. 



Crotch (G. R.). List of all the Coleoptera described a.d. 1758-1821, 

 referred to their modern geuei'a. Carabidae and Dytiscidae. 

 Cambridge, 1871. Huyh Scott. 



CrsHMAN (R. A.). Descriptions of six new species of Ichneumon-flies. 

 [Proc. U. S. Nat. Mus., Vol. XLVIII, 1915.] 



The Sntithsonian, Institution. 



Davidson (W. M.). Waliuit Aphides iu California. 



[U. S. Dept. Agric, Bureau Entom., Bull. No. 100, 1914.] 



U. S. Dej^t. Ayric. 



Davis (J. J.). The Cyrus Thomas collection of Aplndidae, and a tabulation 

 of species mentioned and described in his publications. 

 [Bull. Illinois State Laboratory Nat. Hi.st., Vol. X, Article II, 1913.] 



G. C. Champion. 



The Oat-Aphis {Aphis avenae, Fab.). 



[U. S. Dept. Agric, Bureau Entom., Bull. No. 112, 1914.] 



The Yellow Clover Aphis {Callipteriis tr if alii, Monell). 



[U. S. Dept. Agric, Bureau Entom., Techn. Ser. No. 25, Part II, 

 1914.] 



The Pea Aphis with relation to forage crops. 



[U. S. Dept. Agric, Bureau Entom., Bull. No. 276, 1915.] 



U. S. Dept. Agric. 



De (M. N.). How to improve Silk-reeling in Bengal. 



[Agric. Research Inst., Pusa, Bull. No. 44, 1915.] 



First Report on the Experiments carried out at Pusa to improve 



the Mulberry Silk Industry. 

 [Agric. Research lust., Pusa, Bull. No. 48, 1915.] 



The Institute. 



DoNiSTHOEPE (H. St. J. K.). British Ants, their life history and their 

 classification. Plymouth, 1915. Purchased. 



