LIST OF CONTRIBUTORS TO VOL. LII. 



AINSLIE, C. N Bureau of Entomology Sioux City, Iowa, 



ALEXANDER, C. P State Laboratory of Natural History Urbana, III. 



BAKER, DR. A. C U. S. Bureau of Entomology Washington, D. C. 



BARBER, G. W U. S. Bureau of Entomology Washington, D. C. 



BANKS, NATHAN Museum of Comparative Zoology Cambridge, Mass. 



BLACKMORE, E. H Victoria, B.C. 



BLATCHLEY. W. S Indianapolis, Ind. 



BRAUN, MISS ANNETTE Cincinnati, Ohio. 



BUSCK, AUGUST U. S. National Museum Washington, D. C. 



CAESAR, PROF. L Ontario Agricultural College Guei.ph, Ont. 



CARR, F. S Edmonton, Alberta, 



CHAMBERLIN, DR. R. V Museum of Comparative Zoology Cambridge, Mass. 



COCKERELL, prof. T. D. a University of Colorado Boulder, Col. 



CRAMPTON, G. C Massachusetts Agricultural College Amherst, M.\ss. 



CRIDDLE, NORMAN Dominion Entomological Laboratory Treesbank, Man. 



CURRAN, C. H Dominion Entomological Laboratory Vineland Station, Ont. 



DAVIDSON, W. M U. S. Bureau of Entomology Alhambra, Cal. 



DIETZ, DR. W. G Hazleton, Pa. 



FALL, H. C Tyngsboro, Mass. 



FERRIS, G. F LeJand Stanford University Stanford University, C.\l 



FROST, C. A Framingham, Mass. 



GARLICK, G Ontario Agricultural College Guelph. Ont. 



GARNETT, RICHARD T Oakland, Cal. 



GARRETT, C. B. D Cranbrook, B. C. 



GIBSON, ARTHUR Dominion Entomologist Ottawa, Ont. 



GIBSON, DR. FRANK M Baltimore. Md. 



GLENDENNING, R Duncan, B. C. 



GUNTHORP. HORACE Washburn College Topeka, Kans. 



HABER, VERNON R State Department of Agriculture Raleigh, N. C. 



HEARLE, ERIC Ontario Agricultural College Guelph, Ont. 



HEINRICH, CARL WashingIon, D. C. 



HOLLAND, DR. W. J Director of the Carnegie Museum Pittsburg, Pa. 



HOPPING, RALPH Forest Insect Division Vernon. B. C. 



HUTCHINGS, C. B Forest Insect Division .'. Ottawa, B. C. 



MacDUNNOUGH, dr. J Entomological Branch Ottawa, Ont. 



MacGILLIVRAY, PROF. ALEX. D. .University of Illinois Urbana, III. 



MACNAMARA, CHARLES Arnprior, Ont. 



MALLOCH, J. R University of Illinois Urbana, III. 



MARTIN, J. O Berkeley, Cal. 



MORRIS, F. J. A Peterborough, Ont. 



NAKAHARA, DR. WARO Elmhurst, Long Island, n.y. 



PARSHLEY, H. M Smith College .\ Northampton, Mass. 



ROCKWOOD, L. P U. S. Bureau of Entomology Forest Grove. Oregon. 



ROSEWALL, O. W Louisiana State University Baton Rouge, La. 



SAWYER, W. S Cornell University Ithaca, N. Y. 



SCHROTTKY, C Pto. Bertoni, Par.\guay. 



SMITH, E. J Sherborn, Man. 



STONER, D : .'. Iowa City, Iowa. 



STRICKLAND, E. M Entomological Branch Ottawa, Ont. 



SWAINE, J. M Entomological Branch Ottawa, Ont. 



TAK.'MIASHI, RYOICHI Meguro, Tokyo. Japan. 



TIMBERLAKE, P. H Honolulu, Hawaiian 



Islands. 



TREHERNE, R. C Dominion Entomological Service Vancouver, B.C. 



WALKER, PROF. E. M University of Toronto Toronto, Ont. 



WEISS, H. B Agricultural College New Brunswick, N.J. 



WEST, ERDMAN New Brunswick, N.J. 



WICKHAM, PROF. H. F Iowa State University Iowa City, Iqwa. 



WILLEY, ARTHUR Montreal, P. Q. 



