THE DIPTEROUS GENUS DOLICHOPUS IN NORTH AMERICA. 191 



July (Johnson); Franconia, New Hampshire; Sheridan, Wyoming 

 (Metz); New Bedford, Massachusetts (Hough); Wisconsin; Seattle, 

 Washington, Olga, Washington, July 14; Lafayette, Indiana, July 3 

 and August 21. I have it also from Downie Creek, Selkirk Mountains, 

 British Columbia, August 9; Little Valley, New York, July 31; Niag- 

 ara Falls, New York, September 8; Erie County, New York, July 

 13-September 6; Waubamic, Ontario, August 7; Kearney, Ontario, 

 Augusts; LakeMcDonald, Montana, August 14; Priest Lake, Idaho, 

 August 1 (Melander). 



Type locality. — New York. Aldrich reports it from Massachusetts, 

 Pennsylvania, New Jersey, and South Dakota; Melander and Brues 

 from Illinois and Wisconsin; Chagnon, from Montreal, Quebec; 

 Johnson, from Dunfield, New Jersey, July 14; and Westville, New 

 Jersey, August 14. 



No. 134. DOLICHOPUS VARIABILIS, var. GRACILIS, Aldrich. 



Dolidiopus gracilis Aldrich, Kansas Univ. Quart., vol. 2, 1893, p. 15. — Melander 

 and Brues, Biol. Bull., vol. 1, 1900, p. 148. 



The description of variabilis answers for gracilis in every particular 

 except as to the color of the calypters, which is yellow in variabilis 

 and black in gracilis; it is often partly yellow in this form, so I am 

 placing this as a variety of variahilis. (Fig. 134, wing). 



I have seen the type specimen taken at Philadelphia, Pennsylvania, 

 August 4, and specimens taken at Cuyhoga Falls, Ohio, August 10, by 

 W. V. Warner; Beverly, Massachusetts, October 9; Erie County, New 

 York, July 27-September 3; Kearney, Ontario, August 1. 



Type. — In collection of J. M. Aldrich. 



No. 135. DOLICHOPUS LUTEIPENNIS Loew. 



Dolidiopus luteipennis Loew, Neue Beitr., vol. 8, 1861, p. 18; Mon. N. Amer. 



Dipt., pt. 2, 1866, p. 51.— Melander and Brues, Biol. Bull., vol. 1, 1900, 



p. 148. 

 Male. — Length 4.5-5 mm.; of wing the same. Face rather narrow, 

 silvery white, a very little yellowish near the antennae. Front shining 

 green with a very little gray pollen. Antennae yellow; third joint 

 about as long as wide, a little darkened and pointed at tip; arista dark 

 brown, not quite as long as the antennae. Lateral and inferior 

 orbital cilia pale yellow, only a few of the upper cilia black. 



Thorax green ; dorsum dulled with brownish gray pollen, its lateral 

 edges narrowly yellow; pleurae more blackish with gray pollen. 

 Abdomen green with more or less coppery or bronze reflections; its 

 sides covered with grayish pollen, which extends upon the dorsum. 

 Hypopygium black; its lamellae of moderate size, somewhat triangu- 

 lar but rounded on upper apical corner, apical margin narrowly bor- 

 dered with black, jagged and bristly, fringed above with delicate little 

 brown hairs. 



