Exchange Column.
Psyche 26:170-171, 1919.

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1 70 Psyche [December
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. Cynipidae,-galls or the bred makers,-of the world desired for exchange or pur- chase. Will determine North American material. Address: Alfred C. Kinsey, Bussey Institution, Forest Hills, Mass.
Wanted: Insects of any order from ant nests, with specimens of the host ants, from any part of the world; also Cremastochilinse 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: Insects of the family Embiidae (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 Apantesis from any locality. Also to purchase rare Catoca1ae.-Samuel E. Cassino, Salem, Mass.
Wanted for cash: Lowest representatives of all families of insects, preserved in fluid.4. C. Crampton, Amherst, Mass.
Wanted: Living larval material of Tabanidae, 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 Dickinson 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, Agri- cultural School, 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: Pupse of Lachnosterna fusca, pup= and larvae of Macrodactylus sub- spinosus, imagoes, pupae and work of Saperda candida and calcarata; Zeuzera pyrh 9 , pupae or pupa shell and work. ' Ward's Natural Science Establishment, Roches- ter, N. Y.
Largest Expanse-one each c? and Q Lepidoptera wanted for transfer purposes. Those not good enough for collections will do. Will buy, or exchange for local Lepidoptera, etc.
C. V. Blackburn, 12 Pine St., Stoneham, Mass. Butterflies of Japan and Formosa, will be exchanged by S. Satake, 48 Aoyama- minamimachi 5-chome, Tokyo, Japan.
For Sale: Psyche, complete set, $40. Volumes 3 to 20, newly bound in 11 volumes, red half calf, with black cloth sides; also, Ann. Ent. Soc. Amer., com- plete, $12.
Volumes 1 to 6, newly bound in black half calf, cloth sides. A. C.
Hansen, 945 Margate Ter., Chicago.




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Ward's Natural Science Establishment
84-102 College Ave., Rocheitor, N. Y.
Best quipped establishment in the United States for fumi~hing Entema- logical Supplies am! Specimens
Special Attention is called to our
American Ent. Insect Pina.
Hand made Schmitt and other Insect boxes. Cabinets and Exhibition Casee of the finest workmanship, Life Histories of Insects of Economic Importance, in Eilcer Mounts, Paate- board and Wooden Exhibition Cases, and Preparations in Alcohol, Type, Mimicry and Protective coloration coIlectioa~. Collections of Household, Garden, Orchard, Forest, and Shade tree @. Pine specimens representing Sexual and Seasonal Dimorphism, sad warn- ing colors,
Our stock of Exotic Insects is ~insurpaaaed, shipments from our collectors aboard omving nearly every week.
The following lists are a& free on fljMrfication: 116. Biological material for *tion.
125. Life histories of economic ineecta. 128. List of livin pupae.
129. ~xotic ~epidoptera.
130. North American Lepidaptera.
131. Exotic Coleoptera.
132. North American Coleooh.
143. Type, Mimicry, etc., collections.
145. List of Pest collections.
147, List of Butterflies for trays and decorative work. C-30. Catalogue of Entornologmil supplies. Amer. Ent. Co. price list of Lepidoptera 80 pages. Price 260. Free to our customers.
Neva niustnfed catalogue of Insects ready for distribution. Ward's Natural Science Establishment




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