300 ERNEST A. BACK. 



whitish hair, thoracic dorsum and scutellum with more blackish hair. 

 Hair on the pleurse whitish only in front of the mesopleural suture; 

 beneath the base of the wing there is some stouter black hair. The 

 hair on the first three abdominal segments is whitish, almost yellowish- 

 white; on the gray pruinose area of the second segment there are 

 numerous black hairs which also extend over onto the third segment; 

 the short hair on the following segments, not excepting the last, is 

 exclusively black. The prevailing black hair and the small amount 

 of white hair of legs is arranged as usual; all the bristles of the legs 

 black, as in the other species. 



Type. — M. C. Z. Single female type. 



Habitat. — Illinois (type); N. J. (Am. Ent. Soc.) ; Veta Pass, 

 Col. (June 21). 



Lasiopogon terricola. 



Daulopogon terricola Johnson, Ent. News, XI, 326, 1900. 



(^ 9 • — Length 5-7 mm. — Black, head and thorax grayish-brown 

 pruinose ; the abdomen polished black, the posterior margins and 

 corners of all the segments, except the first, and the legs more or less 

 reddish-brown; the posterior lateral margins of the abdominal seg- 

 ments grayish pruinose. 



Head grayish pruinose; the front, except narrowly along the orbits, 

 and the upper portion of the occiput brownish; the antennae and pro- 

 boscis black; the mystax, fine pile on lower half of occiput and the 

 proboscis beneath white ; the bristly hair of the basal segments of 

 the antennae, frontal orbits, ocellar tubercle and upper occiput black. 

 Thoracic dorsum yellowish-brown pruinose, the humeri and scutellum 

 more grayish; pleurae grayish pruinose, more brownish on the meso- 

 pleurae. On either side of the middle of the dorsum is a rather in- 

 distinct line of a much browner bloom. The short hair and bristles 

 of the dorsum and the trichostical bristles blackish; a patch of pile on 

 the lower part of the prothorax and on the coxae white. Abdomen 

 polished black, thinly white pilose and finely punctate; segments from 

 the second on, with their posterior borders and posterior angles, 

 brownish, but this color on the latter is more or less obscured by a 

 grayish bloom; sides of the first segment and the venter grayish pruin- 

 ose. Genitalia of male brownish, with whitish pile; spines of the 

 female ovipositor black. Legs brownish; the coxs, front, and usually 

 the middle femora, except at tip and base, and the terminal segments 

 of the tarsi blackish; the coxae and femora more or less obscured by 

 a whitish bloom; pile of coxae and legs short, fine, white, the under 

 side of all the femora with longer pile; all the bristles of the legs black. 

 Wings grayish hyaline; the veins dark brown, sometimes slightly bor- 

 dered with fuscous; the anal cell closed on the margin, all the posterior 

 and submarginal cells open. Halteres whitish-yellow. 



