JOURNAL Jlf\a JBopk 6lntoraoIogirflI ^oriptg, Vol. XII. JUNE, 1904. No. 2 Class I, HEXAPODA. Order I, HYMENOPTERA. DESCRIPTIONS OF NEW HYMENOPTERA FROM JAPAN.— 1.'!= By William H. Ashmead, M.A., D.Sc, Washington, D. C. For several years past I have been classifying, arranging and de-termining the Japanese Hymenoptera in the National Museum, pre-sented by several valued correspondents, among whom special mention should be made of Dr. Mitsukuri, of Tokyo, Mr. Y. Nawa, of Gifu, Dr. Matsumura, of Sapporo, and Mr. A. Koebele, now government entomologist of the Hawaiian Islands, whose contributions are of especial value and contain many new species, particularly among the parasitic families. The new species in the superfamilies Sphecoidea, Yespoidea, Proctotrypoidea, Cynipoidea and Chalcidoidea are treated here. Those in the Ichneumonoidea and other superfamilies will be described in another paper. Superfamily II, SPHECOIDEA. Family XYI, CRABRONID^. Genus CLYTOCHRYSUS Morawitz. Clytochrysus dubiosus, new species. Female. — Length, 12 mm. Black; the mandibles, except at apex, the scape, except a line above, all tarsi, the superior edge of the pronotum, emarginate at the * These papers contain descriptions of 115 new species from Japan, two from For-mosa and one from China, one new genus and notes on five previously described species.