68 ENTOMOLOGICAL NEWS [Feb., '15 females never, at any time, possess this coloration on the two segments in question. The determination of the correctness of these assumptions affords a field for further observation and experiment. Those who undertake this should carefully note the colors of the living insects at frequent intervals with reference to some work like Ridgway's Color Standards and Color Nomenclature. Bibliography Supplemental to that Cited by Miss Lyon. SAY, 1839. Journal Acad. Nat. Sciences, Phila., viii, p. 37. LECONTE, 1859. The Complete Writings of Thomas Say on the Ento-mology of North America. New York. Balliere Bros. Vol. II, p. 408. HAGEN, 1861. Synopsis of the Neuroptera of North America. Smith-son. Inst. SELYS, 1876. Bull. Acad. Roy. Sci. Belg. (2), xli, p. 266. PKOVANCHER, 1876. Naturaliste Canadien, viii, p. 323. NEEDHAM, 1898. Outdoor Studies. A Reading Book of Nature Study. New York, Cincinnati, Chicago. American Book Co. P. 61, fig. 61. KELLICOTT, 1899. Ohio State University Bulletin (4), No. 5, p. 48. Ris, 1903. Ent. News, xiv, p. 216. HOWARD, 1903. The Insect Book. New York, Doubleday, Page & Co. WALKER, 1908. Ottawa Naturalist, xxii, p. 50. MUTTKOWSKI, 1908. Bull. Wis. Nat. Hist. Soc., vi, p. 78. Descriptions of New Genera and Species of the Dipterous Family Ephydridae, II* By E. T. CRESSON, JR., Academy of Natural Sciences, Phila-delphia, Pa. Dichaeta atriventris n. sp. Similar to caudata Fall, but smaller (3.0 mm.) and the abdomen is entirely shining black, especially in the female, without any traces of grayish apices to the segments ; the face is somewhat shorter in propor-tion. Holotype. $, Colorado Springs, Colorado. Aug. 5915 ft. alt. (E. S. Tucker). [University of Kansas Collection.] Paratype. I $ , with same data. This may be merely a variety of caudata but I have been un-able to find any intergradents. *Paper I. ENT. NEWS, xxv. 241, 1914.