THE CANADIAN ENTOMOLOGIST. 229 



SOME NEW OR LITTLE-KNOWN BEES. 



BY CHARLES ROBERTSON, CARLINV1LLE, ILL. 



Andrena krigiana, n. sp. 



¥- . — Black; mandibles rufous at tips, toothed near the apex; basal 

 process of labrum short, subquadrate, emarginate ; clypeus somewhat 

 shining towards apex, where it is rather distinctly punctured, elsewhere 

 opaque and reticulated ; face before ocelli longitudinally striate ; facial 

 fovea? quite short, not descending below insertion of antennae, filled with 

 a fine pubescence which appears black; antennae short, joint 3 as long as 

 the next three together, or nearly so, apical joints dull testaceous 

 beneath; thorax throughout opaque and finely reticulated ; enclosure of 

 metathorax poorly defined, but rather strongly rugose ; pubescence of 

 head and thorax rather thin and dull fulvous ; wings subhyaline, nervures 

 and stigma honey-yellow, second cubital cell about one-third as long as 

 the third, oblique, receiving the first recurrent nervure at, or a litttle 

 before, or a little beyond, the middle ; abdomen shining, rather sparsely 

 and rather evenly punctured, apical margins of segments pale testaceous, 

 hardly subfasciate, fimbria fulvous ; scopae pale, the hairs of hind tibire 

 rather strongly plumose. Length, 8 mm. 



g . — Resembles the female ; the face before ocelli not striate ; 

 clypeus with a large trilobed yellow spot. Length, 8 mm. 



Carlinville, Illinois ; 13 $, 1 $ specimen. 

 Par al ictus, n. g. 



This is proposed as a new genus for the reception of Halictus 

 cephalicus, Rob., as the type, and H platyparius, Rob., and the following 

 species as congeners : 



The venation, proboscis, hind spurs and general characters are the 

 same as in the small, dull greenish species of Halictus. The cheeks are 

 broad, mandibles simple ; labrum concave, not produced, terminal lobe 

 not produced to a laterally compressed, strongly pectinate point, but 

 broad and flat, more as in Sphecodes ; anal rims and scopa? obsolete, or 

 nearly so, quite different from Halictus. Of ten female specimens, none 

 have any pollen in their meagre scopse, and I am quite certain that these 

 females do not collect any pollen. 1 captured both sexes of P. cephalicus 

 at a bank filled with nests of Halictus zephyrus, and I suspect that this 

 species is an inquiline of that Halictus, 



