314 Mr. T. D. A. Cockeroll — Descriptions and 



than liigh, receiving the first r. n. at or a little beyond the 

 niitldlc. Legs l)lack, with uhite hair, spurs and claws 

 ferruginous; abdomen shining, with very strong, well- 

 separated punctures, and narrow white hair-bands on the 

 apices of the segments; last ventral segment with the 

 longitudinal carina barely indicated. 



In my table in 'Psyche/ 1905, this runs straight to 

 C. yilensis, CklL, but that is a considerably larger insect, 

 and the sculpture of the metathorax is quite different. In 

 Robertson's table it appears to run closest to C. nudus, Ro'\, 

 but it is easily known from that by the very strong punc- 

 tures of the abdomen. It has a very close resemblance to 

 C. Oi nntta, described above, but differs entirely in the 

 antennje, and otherwise in various small details. 



Ilab. Boulder Caiion, a few miles above Boulder, Colorado, 

 June 26, flying over damp sand (Cockerell). 



Colletes Kincaidii, Ckll., 1898. 



Both sexes were taken at Ward, Colorado, 9000 ft., in 

 July [T. D. A. t^ W. P. Ckll.). The female was at flowers 

 o^ Frasera, while two males were taken at flowers of Gera- 

 nium Fremontii. The male has never been described in full, 

 so a description is here offered: — 



^ . — Length about 9 mm. 



Black, with pale yellowish pubescence, bright ocliraceous, 

 with no intermixture of black, on doi'sum of thorax, light 

 ochreons on f iice ; labrum shining, with a distinct central 

 pit and ficble lateral ones; malar space about as broad as 

 long; mandibles only slightly red apically ; antennse entirely 

 dark, long, the flagellar joints much longer than wide ; 

 flagellum stout, not crenulated ; fif ch autcunal joint longer 

 than fourth, fourth longer than third ; prothoracic spines 

 distinct; mesothorax shining, with large strong punctures, 

 dense anteriorly and laterally, absent in the middle of the 

 disk posteriorly ; scutellum smooth anteriorly, otherwise 

 with punctures like those of mesothorax; postscutellum 

 roughened ; base of metathorax with the usual transverse 

 ai'ca, of which the cross-plications are rather numerous but 

 irregular; apical middle (lower part of triangle) concave and 

 very shiny ; lateral faces roughened, not very shiny; tegulae 

 brown. Wings hyaline, a little milky, stigma very daik 

 ferruginous, nervurcs piceous ; b. n. a moderate distance 

 short of t.-m. ; second s.m. veiy broad, receiving the first 

 r. n. beyond the middle; second r. n. with a very strong 

 double curve. Legs black, only the claws ferruginous. Abdo- 

 lucn strongly punctured, and with very conspicuous pale 



