240 THE CANADIAN ENTOMOLOGIST. 



One specimen, Warbonnet Canyon, Sioux Co., Nebr., June 28th, 

 1901. 



Epinomia triangulifera, Vachal. — Specimens of E. persimilis, Ckll., 

 were sent to Mr. Vachal, and he writes that they are identical with his 

 species. This name, having priority, must take the place of the one given 

 by Prof. Cockerell. 



Calliopsis verbena, var. Ncbraskensis, n. var. — 9 • Differs in 

 having base of mandibles whitish and the apical margins of abdominal 

 segments very pronouncedly testaceous ; tegulas entirely black and very 

 polished. 



$ . — Basal joints of tarsi blackish, apical ones testaceous; abdominal 

 segments as in 9 • 



This form was found at Lincoln, Nebr., July 4-7, and none of the 

 typical form were taken. 



NEW NORTH AMERICAN DIPTERA. 



BY CHAS. W. JOHNSON, PHILADELPHIA, PA. 



Macrocera immaculata, n. sp. — £ °- • Head yellow, vertex brownish; 

 antenna? dark brown, the two basal joints yellow. Thorax dark yellow, 

 with the anterior margin and humeri light yellow. Abdomen dark brown, 

 shining, with a wide yellowish posterior margin on each segment. Legs 

 yellow, slightly brownish at the tips of the femora, tibia? and tarsi ; legs 

 and abdomen in the male with fine black hairs, which are less conspicu- 

 ous in the female. Wings yellowish hyaline, with a slight brownish 

 stigma and very fine hairs. Length of body 5 mm., the antenna? and 

 posterior legs each about double the length of the body. 



Two specimens collected at Richetts, North Mt., Pa., June 8, and one 

 from the " Devil's Hole,'' Niagara Falls, N. Y., June 24. It resembles M. 

 hirsuta, Loew, but is readily distinguished by its yellowish thorax and 

 immaculate wings. 



Phthiria Coquilletti, n. sp. — {Phthiria, n. sp. Smith's Coll. Insects 

 of N. J., ]). 649, 1899.) o* • Face, front and occiput black, with a gray- 

 ish pubescence ; eyes purplish ; proboscis and antenna; black, base of the 



