Exchange Column.
Psyche 26:114, 1919.

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EXCHANGE COLUMN.
Notices not to exceed four lines in length concerning exchanges desired of speci- mens or entomological literature will be inserted free for subscribers, to be run as long as may be deemed advisable by the editors. Cynipidse,-galls or the bred makers.4 the world desired for exchange or purchase. Will determine North American material. Address: Alfred C. Kinsey, Bussey Institution, Forest Hills, Mass.
Sarcophagidce from all parts of the world bought or exchanged according to arrangement. North American material determined.-R. R. Parker, State Board of Entomology, Bozeman, Mont.
Wanted: Insects of any order from ant nests, with specimens of the host ants, from any part of the world; also Cremastochiiince of the world. Will give cash or Coleoptera, Hymenoptera and Diptera from the United States.-Wm. M. Mann, U. S. National Museum, Washington, D. C. Wanted: Old Series Entom., Bul. 1,2,3,33; Technical Series 4,6,7; Insect Life, vol. 4-8; Jour. Applied Microscopy I, N. Y. State Entom. Rep. 3, 4; Fitch Rep. 7,8,13.-Philip Dowell, Port Richmond, N. Y. Wanted: Insects of the family Embiidce (Isoptera). I would give insects of any order except Lepidoptera. I would like to correspond with persons interested in this family.-Raoul M. May, 2202 W. 10th St., Los Angeles, California. Wanted: To exchange, or purchase for cash, specimens of the Genus Apante- sis from any locality. Also to purchase rare Catoc&.ÌÔSamue E. Cassino, Salem, Mass.
Wanted: 19th Illinois Entomological Report; Coleoptera of Southern California, by H. C. Fall; Notes on Lachnosterna of Temperate North America, by J. B. Smith; Complete Works of Thos. Say, Le Conte edition.4. S. Wade. U. S. Bureau of Entomology, Washington, D. C.
Wanted for cash: Lowest representatives of all families of insects, preserved in fluid.-G. C. Crampton, Amherst, Mass. Wanted: Living larval material of Tabanida, obtainable by sifting the soil at edge of water.-Packing in wet material, not water, each larva separate. Will send collecting outfit. Exchange insects of any order, or cash.-Werner Marchand, 10 Diddnson St., Princeton, N. J.
For Sale: A large collection of Javanese butterflies. Letters with particulars regarding desired species and families may be addressed to G. Overdykink, A&- cultural Sehool, Soekaboemi, Java, Dutch East Indies. Wanted: Syrphidae (Flower-flies) from all parts of the world. Exchanges solicited.
Will determine on the usual conditions.
C. L. Metcalf, Ohio State
University, Columbus, Ohio.
Wanted: Pupae of Laehnostm jusca, pupes and larvse of Macrodactylus sub5 pinom, imagoes, pupae and work of Saperda candida and cakarata; Zeuzera p~rina 9, pupse or pupa shell and work.
Ward's Natural Science Establish-
ment, Rochester, N. Y.




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