Exchange Column.
Psyche 21:114, 1914.

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114 Psyche [June
angle; terminal clasp segment long, rather stout; dorsal plate broad, deeply and roundly emarginate, the lobes narrowly rounded; ventral plate moderately long, broad, narrowly rounded apically; style long, the basal two thirds swollen, the apex dilated.
Type: Cecid. 1522.
The well marked midge described above was reared in May, 1908, by Mr. C. A. Frost, Framingham, Mass., from dead twigs of Rhus vemix.
The specimens were placed at our disposal through the courtesy of Mr. C. W. Johnson.
EXCHANGE COLUMN.
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 any 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 mmtuorum from Europe and any other species of Cynomia except Caduuerina. Will give directions for shipment.-P. W. Whiting, Bussey Institution, Forest Hills, Mass. Carubus chamissonis and other rare Coleoptera for Dytisidae not in my collection. -F. 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 Catocla Q
Q (captured specimens only), hibernating pupae and larvae of any other group of Lepidoptera.-William Reiff, 366 Arborway, Jamaica Plain, Boston, Mass.
Florida insects of all orders, also Fish, Batrachians, Reptiles, Shells and Marine Invertebrates sold by A. G. Reynolds, Gulfport, Florida. New England Orthoptera identified. I wish to examine adult orthoptera of all families from all parts of New England. Material will be identified for the privi- lege of retaining desired examples, for which good exchanges will be given, subject to approval of owner.-A. P. Morse, Wellesley College, Wellesley, Mass. The undersigned will greatly appreciate receiving records of New Jersey species not listed in Smith's Insects of New Jersey.-Harry B. Weiss, 272 Hale St., New Brunswick, N. J.
Offered for cash, but exchange preferred. Fitch and early Illinois reports;
Insect Life; Harris's Insect: many others.-J. E. Hallinen, Cooperton, Okla.



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