48 PROCEEDINGS OF TEE NATION AL MUSEUM. vol.48. 



white hair bands; hair at apex light yellowish. Second segment in 

 middle depressed about two-fifths. 



Type. — Entomological collection of the University of Nebraska. 



6 67 . Anterior tarsi not red; species smaller than A. perezana. 

 a 68 . Area of metathorax wrinkled. 



(See A. titusi in Trachandrena, above.) 



6 68 . Area of metathorax not at all wrinkled. 

 Facial foveae very narrow; abdominal hair-bands (on segments 2-4) white and 



entire; first recurrent nervure joins second submarginal cell at middle. 



,69 



ANDRENA MONTROSENSIS, new species. 



Montrose, Colorado. May 5, 1901. (Gillette.) 



Female. — Length, 9 mm. Black, with white hair. Hind tibiae 

 and tarsi clear ferruginous, with pale yellow hair. Facial quad- 

 rangle a little broader than long. Process of labrum very narrowly 

 truncate. Mandibles with the apical half red. Clypeus shining 

 except at sides, well punctured, with no smooth line. Facial foveae 

 seen from above pale reddish, narrow, ending below about level of 

 top of clypeus. Flagellum ferruginous beneath except at base. 

 Third antennal joint not as long as next three combined. Meso- 

 thorax sparsely punctured, dull in front, shining in middle and 

 posteriorly. Scutellum shining. Area of metathorax granular. 

 Tegulae dark reddish. Wings dusky hyaline, darker apically; ner- 

 vures testaceous, the outer ones fuscous; stigma light amber color. 

 Basal nervure falling a little short of transverse median. Second 

 submarginal cell broad, receiving first recurrent nervure about the 

 middle. Hair on inner side of hind tarsi shining pale golden. 

 Abdomen dullish, not punctured ; hind margins of second and follow- 

 ing segments with broad entire white hair bands. Hair at apex pale 

 reddish. 



In the key this is separated from A. costillensis and apacheorum on 

 the venation, the second submarginal cell receiving the first recur- 

 rent nervure beyond the middle in those species. From A. cana- 

 densis it is separated by the dullish dorsulum, that of canadensis 

 being shining. The general appearance is that of A. canadensis. 



Type.— Cat. No. 18157, U.S.N.M. 



6 69 . Facial foveae not especially narrow; abdominal hair-bands not clear white; first 

 recurrent nervure joining second submarginal cell beyond middle. 



ANDRENA MEDIONITENS Cockerell, variety A. 



Westlake, Colorado. July 7, 1900. (Gillette.) 



Female. — Length, 8 mm. Black, with very pale ocherous pubes- 

 cence. Facial quadrangle broader than long. Process of labrum 

 emarginate. Mandibles bright chestnut red apically. Clypeus 

 shining, rather sparsely punctured, with a smooth median line. 

 Facial foveae seen from above brownish white, rather broad, ending 



