Robertson — North American Bees. 333 



male, face in front of ocelli striate ; clypeus finely roughened 

 at base and on the sides, more shining elsewhere, punctures 

 sparse, becoming coarser towards a median impunctate space 

 which widens towards the apex; basal process of labrum 

 nearly semicircular ; mandibles rufous at tips; antennae black, 

 third joint as long as fourth and fifth together, or nearly so ; 

 mesonotum quite opaque, finely roughened, with obscure shal- 

 low punctures ; inclosure of metathorax bordered by im- 

 pressed line, more rugose within; wings fulvo-hyaline, nerv- 

 ures and stigma testaceous, tegulae more dull; first submar- 

 ginal cell longer than next two together, second half as long 

 as third, receiving recurrent nervure beyond the middle ; legs 

 blackish, inclining to dull ferruginous apically, slender, scopa 

 thin ; abdomen clothed with thin pubescence, which is longer 

 on basal segment and inclines to form obscure fasciae on the 

 narrow dull testaceous edges of following segments, fimbria 

 thin, fuscous; surface of abdomen, finely roughened, im- 

 punctate, somewhat shining. Length 10 mm. 



Carlinville, Illinois; 20 §, 12 ^ specimens; Algonquin, 111. 

 (Nason), Franconia, N. H. (Mrs. Slosson). 



The usual specimens have the pubescence pale and quite 

 denuded. The male types were faded. One of my male 

 specimens, as well as the one from New Hampshire, has some 

 black hairs behind the summit of the eyes, as in the male of 

 A. salt cis. 



Andrena g. maculati. 



§. — Black, clothed with thin whitish pubescence; head 

 broader than thorax, cheeks broad and rounded, front before 

 ocelli striate ; clypeus minutely roughened, with sparse, 

 coarse, shailow punctures, presenting an irregular transverse 

 ridge before apex; basal process of labrum large, triangular,, 

 truncate ; mandibles rufous at tips ; third joint of antennae 

 longer than next two together, flagellum dull, testaceous 

 beneath; mesonotum minutely roughened, with rather sparse, 

 shallow punctures ; inclosure of metathorax finely roughened ; 

 wings subhyaline, nervures, stigma and tegulae dull testa- 

 ceous; second submarginal cell about half as long as third, 

 rather strongly narrowed above, receiving recurrent nervure 

 at, or a little before, the middle ; legs slender, blackish, 



