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entomologists’ directory. 
Desrochers, J. E., College Bourget, Rigaud, P. Q., Canada. Coleoptera. 
Collection. Exchange. 
Devereaux, Willard L., Clyde, N. Y. Economic Entomology , Coleop- 
tera , Lepidoptera. Collection. Exchange. 
Dickens, Bertha Kimball, Manhattan, Kansas. Homoplera (fassidce). 
Collection. Exchange. 
Dickerson, Edgar L., 208 Summer Ave., Newark, N. J. Co/eop/era, 
Lepidoptera. Collection. Exchange. 
Dickson, D. M., P. O. Box 467, Woodstock, Ont., Canada. General 
Entomology. Collection. Exchange. 
Dickson, Robert, Berthouer St., Pittsburgh, Pa. Lepidoptera. Coll. 
Dietz, Henry, 371 Main St., Torrington, Conn. Lepid. Coll. Exch. 
Dietz, Ottomar J. L., 140 Nassau St., New York, N. Y. Coleoplera. 
Collection. Exchange. 
Dietz, William G., M.D., 21 North Vine St., Hazleton, Pa. Coleoptera 
(. Rhynchophora ). Collection. Exchange. 
/ Dimmock, George, Springfield, Mass. Anatomy and Biology of In- 
sects. Collection. 
Ditmars, R. L., 1666 Bathgate Ave., New York, N. Y. Econ. Ent. 
Doane, R. W., Washington Agric. College, Pullman, Wash. Diptera. 
Collection. Exchange. 
Dodge, E. A., Louisiana, Mo. Lepidoptera. Collection. Exchange. 
Dodge, G. M., Louisiana, Mo. U. S. Diurnal Lepidoptera and Catocalcr. 
Collection. Exchange. 
Doll, Jacob, Curator Eut. Div. Brooklyn Museum Arts and Sciences, 
Brooklyn, N. Y. Lepidoptera of the World. Exchange. 
Doran, Edwin W., Pli.D., Clinton, Mo. Economic Entomology. 
Dorr, S. H., 945 Niagara St., Buffalo, N. Y. Coleoptera. 
Doten, Samuel B., Reno, Washoe Co., Nevada. Economic Entomology. 
Downs, S. U., Portland, Oregon. Econ. Ent. (Fruit Pests). 
Draper, Edwin H., 6700 Normal Ave., Chicago, 111 ., and 305 Broadway, 
New York, N. Y. Coleoptera. Collection. Exchange. 
Duckworth, A. S., Keosauqua, Iowa. Coleoptera, Lepidoptera. Col- 
lection. Exchange. 
Duden, Hans, 815 N. New Jersey St., Indianapolis, Ind. Adaptation of 
beetles to plants. Collection. 
Dunbar, Robert E., Dunbar Place, Waterville, Me. Coleoptera, Lepi- 
doptera. Collection. Exchange. 
Duncan, George T., Ward’s Nat. Sci. Establishment, Rochester, N. Y. 
General Entomology. Collection. Exchange. 
Dunlop, Mary Veronica, Woodstock, Ont., Canada. General Entomo- 
logy. Collection. Exchange. 
Dunn, G. W., 34 Mead Ave., Oakland, Calif. Coleoptera. Collection. 
Exchange Coleoptera, Lepidoptera. 
Dunne, Harold E., “ The Maples,” E. Washington Lane, Germantown, 
Philadelphia, Pa. Coleoptera, Lepidoptera. Coll. Exch. 
