252 THE CANADIAN ENTOMOLOGIST 



This form must be allied to inceptaria Walk., which is, in my 

 opinion, distinct from argillacearia Pack. Dyar's reference is also 

 incorrect. It was described as Numeria inceptaria in the Canadian 

 Naturalist and Geologist, Vol. 5, pp. 241-266, Aug. 1860. AroiUa- 

 cearia Pack, seems to lack definite lines, Avhile, according to the 

 description, inceptaria has two on the hind wings and three on the 

 fore wings. I rather think it is nearer evagaria Hulst and inceptaria 

 t h a n a r gill a cea ria . 



SOME ROCKY MOUNTAIN ANDRENID BEES. 



BY T. I). A. COCKERELL, BOULDER, COLORADO. 



Andrena cyanura, sp. n. 



9. — Length about 12 mm.; i;lack, with the abdomen shining 

 dark blue; hair of head and th(;rax abundant, mainly very pale 

 ochreous or white, with an ochreous tint, but black at sides of 

 face, on lower part of clypeus, on front,' vertex anteriorly, checks, 

 posterior part of mesothorax and pleura except upper part; sides 

 of metathorax with copious entirely pale hair; facial quadrangle 

 much broader than long; process of lal)rum very broadh' rounded; 

 clypeus strongly and closely punctured, with a median raised 

 line; facial fovea? dark chocolate, broad, ending a little below level 

 of top of clypeus; antenucc dark, third joint a little longer than 

 next two together; mesothorax entirely dull, with small jiunctures; 

 area of metathorax granular, defined by absence of hair; teguhe 

 black; wings strongh* brownish;- stigma rather small, ferruginous, 

 with a tlark fuscous margin; nervures fuscous; second s. m. very 

 broad, receiving first r. n. at or near middle; legs with black or 

 sooty hair, floccus on hind trochanters white; hind femora with 

 long white hair on upper side; tibial scopa with stiff, nearly straight 

 hair; abdomen without bands, dorsally almost without hair, 

 shining, without distinct punctures; dense hair at apex black; 

 second segment depressed about a third. 



Hah. — Troublesome, Colorado, 2 9 's at flowers of Salix, 

 June 8, 1908 (5. A. Rohwer). A remarkable species, superficially 

 like A. vicina, but easily known by the blue impunctate abdomen. 

 From A. laivrencei V. & C, it is known by the larger size and 

 black thorax. Also at Troublesome, on the same day, Mr. Rohwer 

 took A. vierecki Ckll. at flowers of Amelanchier. 



July, 1910 



