310 ]\Ir. T. IX A. Cockcrcll — I)escn)>tin7is and 



the paler tibial seopa, darker tarsi, &c. lii Bruuer's table it 

 runs to Dunuiiigi and errans, but it is not closely related to 

 tlicse. 



Hub. Boulder, Colorado, June 1, 1905 {IV. P. Cockerdl). 



Andrcna BirtivelU, Ckll., 1901. 



'J'liis sjiccies was found at AA'ard, Colorado, July 18, 1905, 

 visitin«!^ flowers of Drymocallis. As it is somewhat variable, 

 and my original description did not allude to certain impor- 

 tant characters, I give a new description, from the AVard 

 material. 



$ . — Leno^th about or not quite 10 mm. 



Black, with greyish-white hair, that on dorsum of thorax 

 very pale oehreous ; head broad ; jnocess of lahrum rather 

 narrow, truncate, the end thickened ; clypcus with strong, 

 rather irregularly placed punctures, and a strong smooth 

 median ridge ; antennae dark, third joint longer than 4-1-5, 

 flagcllum a little reddened apically; facial fovese broad, daik 

 chocolate-colour, seen from above not diverging from eye- 

 margin, ending near level of top of clypeus ; mesothorax 

 dull, with feeble punctures, in the middle it is more shining, 

 Avith the punctures evanescent ; scutellum shining, sparsely 

 punctured ; area of metathorax very ill-dcfiupd, dull, and 

 granular ; teguhc very dark brownish, shining. Wings a little 

 dusky, especially apically, stigma dull reddish, nervures 

 fuscous ; first r. n. joining second s.m. about the beginning 

 of its lust fourth. Legs dark, hair on inner side of basal joints 

 of anteiior and middle tarsi dark shining reddish, that on 

 hind tarsi more fuscous ; scopa on hind tibiae short and dark 

 cliocolate-colour (the hind femora and sides of metathorax 

 carry a large amount of very pale greenish-yellow pollen, 

 but the tibiae little) ; tuft over hind knees brown-black ; the 

 very lai'ge metathoracie scopa is shining white. Abdomen 

 nearly nude, shining black, with no bands, and only very 

 sparse ])iliferous punctures; second segment in middle de- 

 ])rcsscd more than half, but feebly ; caudal fimbria purplish 

 black. 



Andrcna edwinice, sp. n. 



? . — Length about 13 mm. 



Black, -with the general appearance of the species of the 

 vicinu group. Hair of face, top of head, thorax above, first 

 abd(,miual segment and middle of second, long, coarse, and 

 yilloMi>h white, of sides of occiput, hind ])art of clucks, and 

 pk lira black, of lower anterior part of checks pallid ; head 



