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entomologists’ directory. 
Lucock, Frank, 7237 Bennett St., Sta. A., Pittsburg, Pa. General Ento- 
mology. Collection of Lepidoptera. Exchange. 
Ludlow, J. H., 705 Ninth St., Elkhart, Ind. Coleoplera. Collection. 
Luetgens, A., P. O. Box 328, New York, N. Y. Coleoplera (esp. Cicin- 
delidce and Carabidce of the world). Collection. Exchange. 
Lugger, Otto, State Entom., St. Anthony Park, Minn. Coleop. Coll. 
Lull, Richard S., Amherst, Mass. Gen. Ent., Coccidec. Coll. 
Lumsden, George R., 82 Oakridge St., Norwich, Comi. Coleoptera and 
/ . Parasitic Insects. Collection. Exchange. 
Lyman, Henry H., 74 McTavish St., Montreal, Canada. Lepidoptera. 
Collection. Exchange. 
MacCartney, Benj. F., State Zoologist, Dept, of Agric., Harrisburg, Pa. 
General Entomology . 
MacGillivray, Alex. D., Cornell University, Ithaca, N. Y. Thysanura, 
Tenthredina , Morphology and Development of Insects. 
Mackenzie, G. P., 2824 E. Sixth St., Kansas City, Mo. Coleoptera. Col- 
lection. Exchange. 
MacLaughlin, T. J., Department Public Works, Ottawa, Out., Canada. 
Odonata. Collection. 
Mally, C. W., Wooster, Ohio. Hemiptera, Parasitic Hymenoptera. 
Mally, Fred. W., M. Sc., College Station, Texas. Hymen. Coll. Exch. 
Manee, Abram H., Belchertown, Mass. Coleoptera , Lepidoptera ( Sphin ■ 
gidee). Collection. Exchange. 
Mann, B. Pickman, 1918 Sunderland Place, Washington, D. C. Bibli- 
ography of Entomology. Exchange in literature. 
Mares, Adolf, 504 W. 20th St., Chicago, 111 . Lepidoptera. Collection, 
/^larlatt, C. L. , Agric. Dept., Washington, D. C. Tenth red in id tc , Coc- 
cidce ( Diaspincr ). National Museum Collection. Exchange. 
Marlatt, Frederick A., State Exper. Station, Manhattan, Kansas. Eco- 
nomic Entomology. Collection. Exchange. 
MarlofT, Fred., Oak Station P. O., Allegheny Co., Pa. Lepidoptera. 
Collection. Buy and exchange. 
Marmont, Lindsay E., Rounthwaite, Man., Canada. Coleoptera , Lepi- 
doptera. Collection. 
Marshall, Wm. S., Univ. of Wis., Madison, Wis. Coleop. Coll. Exch. 
Martin, James O., Box 1175, Cascadilla Place, Ithaca, N. Y. General 
Entomology . Collection. Exchange in Coleoptera. 
Martin, Noel B., South Orange, N. J. Lepidoptera. Coll. Exch. 
Mason, Albert P., 54 Brackenbury St., Malden, Mass. Coleoptera, Lepi- 
doptera. Collection. Exchange. 
Mason, Charles G., 54 Brackenbury St., Malden, Mass. Lepidoptera of 
the World. Collection. Exchange or purchase. 
Mason, Frank R., 220 W. Chelton Ave., Germantown, Philadelphia, Pa. 
Coleoptera. Collection. Exchange. 
Mason, J. T., 1572 Race St., Denver, Col. Lepidoptera. Coll. Exch. 
Massey, W. F., P. O. Box 385, Raleigh, N. C. Econ. Ent. Coll. 
