THE CANADIAN ENTOMOLOGIST. 239 



pubescence of head spaise ; mesothorax rather coarsely and sparsely 

 punctured, rather densely clothed with brownish pubescence, longer and 

 whitish on the pleura; on the disc posteriorly sparse; the scutellum 

 bare, fringed posteriorly with brown hair; postscutellum similarly fringed 

 posteriorly ; the base of the metathorax with sparse punctures, the 

 truncation smooth and polished ; tegulaa brownish ; nervures and stigma 

 honey-colour; legs black, apical joints of tarsi ferruginous ; legs clothed 

 with brownish pubescence, that on the inner side of two anterior pairs of 

 tarsi reddish ; scopa of hind legs : on tibia whitish, tinged with yellow, 

 on tarsus dusky reddish within ; abdomen with the first two segments 

 shining, smooth, apparently punctured only at the insertion of the hairs, 

 which are sparse ; the first segment truncate basally and the edge marked 

 by a transverse carina ; apical margins of segments with bands of 

 brownish plumose pubescence, that on the first segment reduced to two 

 lateral spots, slightly oblique ; rest of segments in front of bands with 

 dark pubescence ; pubescence at the apex of abdomen more golden ; 

 ventral segments dark, apically ferruginous. Length, 7-8 mm. 



$ . — Similar to the female, but with dense hair on the face and with 

 the clypeus and labrum yellowish-white ; pubescence lighter in colour ; 

 tarsi ferruginous. Length, 7-8 mm. 



In old specimens the pubescence fades out and in the male becomes 

 a silvery-white. Many specimens taken at Lincoln, Nebr., on Heliantlms 

 animus. 



Stelis pulchra, n. sp. — °. Head greenish, bluish on the vertex, 

 coarsely and confluently punctured on the face, on the vertex less closely 

 and not confluently ; thorax blue with greenish and purplish reflections, 

 strongly but not closely punctured ; abdomen greenish ; pubescence on 

 face light mixed with blackish and brownish hairs ; on dorsum of thorax 

 light ; on pleura dark brown ; on abdomen black ; scape of antennae 

 greenish, punctured ; flagellum dark testaceous, last three joints flattened 

 on one side ; tegulre bluish with a light centre, punctured ; legs same 

 colour as the thorax, tarsi with dark brown hair ; wings slightly dusky ; 

 abdomen with yellowish-white colour bands on segments 1-4 ; that on 

 segment one bent backwards laterally; that on segment three attenuated 

 laterally ; that on segment four not reaching the sides of the abdomen 

 and attenuated laterally; all narrowed medially; beneath bluish. Length, 

 about 1 1 mm. 



