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 aflFords 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. 



Provancher, 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. — IP 



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 $ , v^ith 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, 



