Messrs. T. D. A. Cockerell and W. Porter on Bees. 409 



Entechma grisella, sp. n. 



c? . — Pubescence pale yellowish grey, short and dense, 

 especially on the abdomen, where it resembles velvet. An- 

 tennae short, about 3^ millim, long, black; first joint of 

 flagellum about three times as long as second ; face wholly 

 dark, facial quadrangle somewhat longer than broad ; ocelli 

 large, in a curve ; vertex punctured behind the ocelli, smooth 

 and shining at the sides ; clypeus and labrum well punctured, 

 the latter large, quadrate ; mesothorax and scutellum with 

 large close punctures ; tegul^e rather large, brownish testa- 

 ceous ; wings clear, nervures dark brown ,• costal and subcostal 

 nervures united by chitin, forming a very thick costal margin ; 

 stigma minute, little developed ; marginal cell lanceolate, 

 the apex away from the costa ; first submarginal cell only a 

 little longer than third ; second shortest, a little narrowed 

 above, receiving the first recurrent nervure near the end ; 

 third narrowed about half to marginal, receiving the second 

 recurrent nervure near its end ; median and submedian cells 

 practically equal on the externo-median nervure. Leo-s 

 black, with short pubescence ; claws deeply cleft, pulvillus 

 large ; hind femora swollen basally ; spurs black ; basal 

 joint of hind tarsi long and slender, gently curved ; abdomen 

 with the pubescence on hind margins of segments 2 to 4 

 whiter than the rest, producing the effect of bands. 



Length about 11 millim. 



Hah. La Cueva, Gallinas River, S. of Las Vegas, New 

 Mexico, Aug. 6, 1899 (IF. Porter). 



The first joint of the labial palpus is much less than half 

 the length of the second, and the first joint of the maxillary 

 palpus is conspicuously longer than the second. 



Entechnia dakotensis, sp. n. 



? . — Length 12 millim. 



Similar to E. grisella^ but broader, with the abdominal 

 pubescence scanty enough to give the eflfect of dust on a 

 black surface, except for the three very distinct white bands 

 on the hind margins of segments 2 to 4. Apex of abdomen 

 with dark fuscous hair ; ventral segments fringed with dark 

 hair; hind tibia and basal joint of tarsus with a long loose 

 scopa of brown-black plumose hair. Flagellum brownish 

 towards the end. 



Hah. Hot Springs, Dakota {L. Bruner^ no. 22). 



It is just possible that E. dakotensis is the female of E. qri- 

 sella, but the wide diflference of locality and the conspicuous 



