AET. 19. AMEEICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 33 



flagellum testaceous beneath. Mesothorax and scutellum opaque, 

 microscopically tessellate; the disk sparsely punctured; outside the 

 disk the punctures are about the diameter of a puncture apart; disk 

 of propodeum dull, slightly elevated posteriorly, microscopically 

 tessellate between irregular rugae; the rugae extend on to the sides of 

 the propodeum; truncation distinct laterally; tegulae dark, impunc- 

 tate. Abdomen ovate, shining, im punctate; very sparsely pubescent; 

 apical margins of segments polished, narrowly testaceous. Wings 

 hyaline; anterior wing 5.25 mm. long; stigma and nervures dark; 

 second submarginal cell higher than broad, receiving the first recur- 

 rent nervure a little distance from the apex; third submarginal sub- 

 quadrate, hardly contracted above, about one and one-third times 

 as long as the second on the marginal. Legs black, with yellowish 

 hairs; tarsi reddish. 



Habitat. — Santa Fe, New Mexico, July (Cockerell). No. 3467; on 

 Linum lewisii. 



Type.— C&t. No. 26433, U.S.N.M. 



HAUCTUS (CHLORALICTUS) PUDICUS. new species. 



Male. — About 6.5 mm. long; head and thorax dark blue; abdomen 

 black; pubescence pure white, sparse. Facial quadrangle longer 

 than broad; orbits converging slightly below; front above the anten- 

 nae with close, shallow punctures; the punctures becoming more 

 sparse below, and at the sides of the face which is greenish; clypeus 

 and supraclypeal area microscopically tessellate, delicately punctured; 

 apices of mandibles red; antennae dark, second and third joints of 

 equal length; flagellum testaceous beneath. Mesothorax opaque, 

 microscopically tessellate, with punctures about the diameter of a 

 puncture apart, and more scattered on the disk; punctation of scu- 

 tellum similar to that of the mesothorax, two shining spots on the 

 disk; disk of propodeum crescentic, shining, plicate, the plicae some- 

 what discontinuous and extending over the margin on to the sides; 

 truncation distinct laterally, but not sharply defined; tegulae dark, 

 impunctate. Abdomen narrowly ovate, shining, impunctate, very 

 sparsely pubescent; apical margins of the segments polished, narrowly 

 testaceous. Wings hyaline; anterior wing 5 mm. long; stigma and 

 nervures dark testaceous; second submarginal cell higher than broad, 

 receiving the first recurrent nervure very near the apex; third sub- 

 marginal as high as broad, contracted sharply above, about equidis- 

 tant with the second on the marginal. Legs black; knees somewhat 

 reddened; tarsi yellow. 



Habitat. — Longs Peak, Colorado, August, at flowers gentian 

 (Cockerell). 



Type.—Csit. No. 26434, U.S.N.M. 

 45554— 25— Proc.N. M. vol.65 40 



