Oct., 1917 Bulletin of the Brooklyn Entomological Society 89 



so in the other but variable in both) ; the ventral half of the prepectus is 

 not rugulose but near caudal margin has a cross-row of fovese ; the middle 

 section or finely punctate portion of the mesopleurum is larger (a third 

 wider), as wide as the third or caudal or the section with cross-rugae; 

 the propodeum and prepectus are wholly black; and the abdomen from 

 above is finely scaly after segment 2 (not until after 4 in the other). A 

 variety has black spots above on the first two pairs of femora, the cephalic 

 tibiae are black centrally dorsad, the middle tibiae wholly black. 



The male is similar except that the scape is black. Petiole twice longer 

 than wide; funicle 5-jointed. 



From two males, seven females taken from the pupal chambers of Pis- 

 sodes strobi in September, 1916, as larvae and reared several months later. 

 Taylor's Falls, Minn. (S. A. Graham). Types: Cat. No. 20,969, U. S. 

 Nat. Mus., one male, four females on four tags. 



In New York it appears as an adult in May. 



THREE NEW SPECIES OF THE NEW GENUS ANDRENA 



FROM THE UNITED STATES (HYMENOPTERA, 



ACULEATA). 



By J. R. Malloch, Urbana, 111. 



The three species described in the present paper are probably 

 represented in other collections, and it is quite possible that 

 regularis is confused with carlini or even with vicina in collec- 

 tions from the eastern states. 



Andrena banksi n. sp. Male. — Black, clypeus lemon-yellow. Head shin- 

 ing, glossy behind eyes and on lower part' of face; antennae subopaque. 

 Thorax subopaque, slightly shining on posterior half of pleurae. Abdomen 

 glossy. Surf ace hairs grayish, or those on disc of thorax slightly yellowish. 



Head distinctly broader than high ; clypeus glossy, flattened, and almost 

 impunctate on center of disc, the punctures becoming more numerous and 

 much closer towards each lateral angle; anterior central outline of clypeus 

 broad, regularly arcuate, the length across equal to that from its outer 

 angle to base of mandible; mandibles long and curved, inner tooth small, 

 well removed from apex, no tooth at base on under side; cheek broader 

 than eye, produced opposite middle of eye into a more or less tooth-like 

 process which projects backward, but rarely reduced, appearing as an 

 angular production of the posterior margin which is more or less accen- 

 tuated by the presence of a slight concavity at base on its lower margin. 

 Thorax throughout finely and closely shagreened, and indistinctly punctate. 

 Abdomen much less closely shagreened than the thorax, the only punctures 

 present being those at the bases of the rather long, sparse surface-hairs; 



