tHE CANADIAN ENtOMOLOGIST. 133 



distal joint small; proboscis brown; clypeus brown, with "frost"; eyes 

 dark brown. 



Thorax brown ; prothoracic lobes covered with pale ochraceous scales 

 and dark brown bristles ; mesonotum with narrow curved dark brown 

 scales, a golden-brown in some lights, a few pale ochraceous ones hardly 

 forming a line on the lateral margins and an arch of them surrounding the 

 "bare space, '^ two submedian bare lines from cephalic end nearly to "bare 

 space" covered with "frost," so that they seem like two very fine but 

 distinct white lines ; scutellum brown, with pale ochraceous curved scales 

 and large brown bristles ; i)leura covered with white "frost" and having a 

 couple of large bunches of white, flat spatuLite scales ; metanotum brown. 



Abdomen brown, covered with rather broad flat scales, tending to 

 iridescence, narrow white apical bands, and white apical lateral spots con- 

 tinuous with the scaling of the venter, which is white ; white apical hairs. 

 On the last segment the apical band becomes much diminished on the 

 median line, possibly sometimes broken so as to form two spots. 



Legs as a whole brown ; cox^e and trochanters light and nearly naked, 

 but showing the white "frost" ; femora light at base and on ventral aspect, 

 a small light knee-spot minutely involving both sides of the joint; tibia 

 brown, a minute apical light spot involving both sides of the joint, 

 remainder of tarsi all brown ; all ungues small, equal, and simple. 



The colouiing as a whole is dark, but the scales are very sensitive to 

 the position of the light, and on the legs it is almost impossible to deter- 

 mine if there be a very narrow light line on the ventral aspect of the tibia 

 or not, for in sonje lights it is not apparent, and in others it appears 

 present. The mesothorax shows the same trait, in that the tips of the 

 scales become goiden-brown, and are thus very misleading. 



Wings clear; scales brown, slender, covering the distal half of wing 

 rather heavily; cells vary somewhat in the two wings, first submarginal 

 about a third longer and nearly the same width as second posterior, the 

 stem of the former about a fourth the length of its cell, of the latter a little 

 more than half the cell's length; supernumerary and mid about the same 

 length and meet, posterior cross- vein slightly shorter and three times its 

 length distant. Halteres light, a few brown scales on the distal parts of 

 stem. 



Length, 4 mm. Habitat, Fort Snellii^g, Minn. Taken Oct. i. 



Collected and sent by Major E. B. Frick, Surg. U. S. Army, after 

 whom it is named. 



