66 
CHARLES ROBERTSON. 
like that of thorax, but a little paler, black beyond, second at base with short, 
dense, grayish pubescence, black beyond, third and fourth black at base, grayish 
beyond, with pruiuous toinentum towards apex, fifth similar, but with long fus- 
cous pubescence towards apex, sixth with fuscous pubescence. Length 13 — 16 lum. 
— Resembles the female; apex of clypeus with the lateral emarginations 
narrower, deeper and more rounded, making the clypeus three lobed, middle 
lobe concave above, slightly emargiuate at tip; transverse band near apex of 
clypeus, labrum and base of mandibles pale yellowish ; middle of mandibles 
toothed exteriorly ; antennae reaching to scutellum, flagellum testaceous beneath, 
black at tip ; pubescence of legs pale, hind tarsi slender, front and middle claws 
nearly ec£ually cleft, hind claw with a short triangular tooth at extreme base ; 
segments 3-6 of abdomen with pruinous tomentum. Length 13 — 16 mm. 
Three females, four males, taken from July 22d to August 20tli, 
on flowers of Ipomoea pand^irata. 
