no. 2064. BEES OF GENUS ANDRENA—VIEREGK AND COCKERELL. 47 



of labrum very peculiar, being very broad with the apical margin 

 concave and the apical corners projecting. Clypeus irregularly 

 punctured, surface almost hidden by hair. Facial foveae seen from 

 above grayish white, occupying about half space between eye and 

 antenna, below scarcely extending below level of antenna. Flagellum 

 short and thick, obscure reddish beneath. Third antennal joint 

 longer than next two together, but the next is extremely short. 

 Mesothorax dull, not punctured. Scutellum slightly shining. Area 

 of metathorax granular, extremely small. Tegulae light rufo testa- 

 ceous. Wings strongly reddened, dusky at apex. Stigma and 

 nervures ferruginous. Basal nervure meeting transverse median. 

 Second submarginal cell broad, receiving first recurrent nervure in 

 middle, hair on hind tibiae very pale yellowish. Abdomen dullish, not 

 punctured, the hind margins of the segments narrowly white, the 

 junction of the white and black reddish. Segments with long, thin, 

 glittering hair, not hiding the surface. Hind margins with broad 

 white hair bands, scanty on first segment. Hair at apex light ferrugi- 

 nous. Second segment in middle depressed about two-fifths. 



In the key this falls in a couplet with A. davidsoni, from which it is 

 separated by the dull dorsulum. 



6 66 . Hair at apex of abdomen not thus bright. 

 a 67 . Larger; anterior tarsi red ; head very broad. 



ANDRENA PEREZANA, new species. 



Lincoln, Nebraska. May. 



Female. — Length, about 12 mm. Black, with the hind tibiae and 

 all the tarsi, as well as the anterior tibiae on inner side except at base, 

 the middle tibiae at apex, and the sides of the abdomen near base 

 beneath, ferruginous, the tarsi very bright and clear. Pubescence 

 grayish white, not at all yellowish dorsally. Head very broad, 

 process of labrum broadly truncate. Clypeus shining, finely and 

 closely punctured, with a slender median smooth line. Facial foveae 

 seen from above cream white, occupying at least two-thirds of space 

 between eye and antenna; below they do not go below level of an- 

 tennae. Flagellum reddish brown beneath. Third antennal joint 

 slightly longer than the next two combined. Mesothorax and scu- 

 tellum shining, with extremely minute scattered punctures. Area of 

 metathorax granular. Tegulae reddish. Wings strongly reddened, 

 nervures and the rather small stigma ferruginous. Basal nervure 

 falling short of transverse median. Second submarginal cell receiving 

 first recurrent nervure at beginning of last third. Hair on hind tibiae 

 shining white. Abdomen shining, the hind margins of the segments 

 red; no punctures; very little hair except at base and apex, and on 

 the hind margins of the segments, where there are broad but thin 



