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5. WHAT SPECIAL INVESTIGATIONS HAVE YOU COMMENCED, CONTINUED, OR COMPLETED, UPON THE MATERIAL UNDER YOUR CARE, DURING THE YEAR. The curator has published a "Revision of the Aphelinimae of North America," and "The Grass and Grain Joint-worm flies and their allies," in Technical Series, Nos. 1 and 2 U.S. Dept. of Agric., based upon Museum material. He has [[strikethrough]] already [[/strikethrough]] also completed but not yet published a report on the Chalcididae of the Island of Granada, and, conjoint with Mr. Ashmead, a for small[[?]] paper on some research parasitic Hymenoptera from [[?]]. Mr. Ashmead has completed and published his report on the parasitic Hymenoptera of the Island of Granada, comprising the families Cynipidae, Ichneumonidae, Braconidae and the [[strikethrough]] Por [[/strikethrough]] Proctotrypidae, submitted by Dr. David Sharp on behalf of the Committee for investigating the Flora and Fauna of the West Indian Islands. He has also described a new genus and two new species of Proctotrypidae from Trinidad, submitted by Mr. F. W. Urich; and in a paper published in the Trans. Am. Ent. Soc. of Philadelphia, June 1896, describes a large number of new para [[strikethrough]] sites [[/strikethrough]] sitic Hymenoptera based upon Museum material. During the year besides rearranging some of the families of the Aculeate Hymenoptera and Hemiptera, he has identified several hundred species of Hemiotera and between two and three thousand species of Hymenoptera for correspondents of the Department of Agriculture. Monographic work is also being done on the families Braconidae, Cynipidae and Chalcididae. Mr. Coquillett has published a revision of the North American genera and species of Empidae, in which four new genera and sixty-six new species are described. Types of all of these new forms are now in the National Museum.