42 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.48. 



ANDRENA (MERRIAMI variety?) FULVINIGRA, new species. 



Fort Collins, Colorado. April 24, 1903. (Gillette.) 



Female, — Length, 9 mm. Black, with black hair except that on 



occiput and thorax above which is bright ferruginous; it is red on 



tubercles but black on pleura, but on metathorax it is red in middle, 



but black at sides; on inner side of hind tarsi it is chocolate color. 



Facial quadrangle very much broader than long. Process of labrum 



very broadly truncate, clypeus shining, with small punctures, sparse 



in middle. Facial foveae very narrow, seen from above light reddish, 



but reddish black at other angles, ending below at about level of 



antennae. Flagellum dark beneath; third antennal joint about as 



long as next three together, the fifth very short. Meso thorax dull, 



with very minute inconspicuous punctures. Surface of scutellum 



hidden by the very bright red hair. Area of metathorax feebly 



roughened, somewhat shining. Tegulae rather dark reddish. Wings 



brownish hyaline, nervures and stigma rather light reddish. Basal 



nervure meeting transverse median. Second sUbmarginal cell very 



broad, receiving first recurrent nervure about middle. Long hair on 



outer side of hind femora dull whitish but that on knees and hind 



tibiae slaty black. Abdomen shining, without distinct punctures, 



and with little hair. No bands on hind margins of segments. Hair 



at apex slaty black. 



(I have this also from Florissant, and considered it to be A. merriami. 



Mr. Viereck, who had access to the type of merriami associates them 



closely in the key, separating them thus : 



Clypeus coarsely punctured merriami. 



Clypeus finely punctured fulvinigra. 



Type.— Cat. No. 18153, U.S.N.M. 



6 53 . Abdomen more or less banded; hair of cheeks light (partly dark in topazana). 

 a 58 . Facial quadrangle longer than broad; a curious oblong head. Hair at apex of 



abdomen light reddish. (A. campanulae, with a rather narrow face, has hair 



at apex of abdomen sooty.) 



(A. cheyennorum; see above under males.) 

 6 58 . Facial quadrangle broader than long. 

 a 59 . Large species with costoapical region of wings dark. 



ANDRENA ARIZONENSIS, new species. 



Oracle, Arizona. June 19, 1903. (Oslar.) 



Exactly like the black variety of A. prunorum gillettei, which occurs 

 rarely at Boulder, Colorado, except that it is more finely punctured . 

 It is probably a race of A. prunorum. It is quite distinct from A. 

 argemonis. 



Female. — Length, 12 mm. Black, the tarsi reddish at apex. 

 Pubescence grayish white, pale yellowish on tarsi. Facial quad- 

 rangle broader than long. Process of labrum broadly truncate, very 

 feebly emarginate. Clypeus brilliantly shining, sparsely punctured; 



