Exchange Column.
Psyche 20(5):171, 1913.

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Notes
EXCHANGE COLUMN.
Wanted, in exchange or for cash, North American Catoca1a.-Rudolph C. B. Bartsch, 46 Guernsey Street, Roslindale, Mass. Empididse desired from any part of the world.-A. L. Melander, Bussey Insti- tution, Forest Hills, Mass.
Will name and return species in certain families of Coleoptera. Buprestidse
.especially desired.-C. A. Frost, 26 Pond Street, South Framingham, Mass. Wanted.
Insects from ant-nests, with specimens of the ants, from any part of the world.
Will give Coleoptera, Diptera and Hymenoptera from the Western United States.-W. M. Mann, Bussey Institution, Forest Hills, Mass. Will exchange for Geometridse from any section of North America, or identify material for privilege of retaining examples.-L. W. Swett, 501 Washington Street, Room 44, Boston, Mass.
Will exchange insects of various orders for Parasitic Hymenoptera from any part of the world.-C. T. Brues, Bussey Institution, Forest Hills, Mass. Wanted, for cash or exchange, living material of Lucilia from the Southern States; also living material of Cynomia mortuorum from Europe and any other species of Cynomia except Cadauerina. Will give directions for shipment.-P. W. Whiting, Bussey Institution, Forest Hills, Mass. Carabus chamissonis and other rare Coleoptera for Dytisidse not in my collection. -5'. W. Dodge, Melrose Highlands, Mass.
Wanted. Ants from all parts of the world.-W. M. Wheeler, Bussey Institution, Forest Hills, Mass.
I pay cash or give American and exotic insects in exchange for fertile eggs of Catocala spp., living Catocala $ $ (captured specimens only), hibernating pupae and larvae of any other group of Lepidoptera.-William Reiff, 366 Arborway, Jamaica Plain, Boston, Mass.




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