no. 2064. BEES OF GENUS ANDRENA—VIERECK AND GOCKERELL. 57 



marginal cell receiving first recurrent nervure at or little before 

 middle. Hair on hind tibiae and on inner side of hind tarsi white, 

 faintly yellowish on the tarsi. Spurs cream color. Abdomen dullish, 

 with excessively minute punctures. Segments 2-4, with broad entire 

 white hair bands. Hair at apex very pale yellowish. Second seg- 

 ment in middle depressed less than a third. 



This is very like A. synthyridis Cockerell; they agree in the foveae, 

 but antonitonis has the middle of mesothorax shining and sparsely 

 punctured, while synthyridis has it duller and more closely punctured. 

 They also differ in the minute sculpture of abdomen, and are cer- 

 tainly distinct species. In the key, A. antonitonis falls in a couplet 

 with A. perindotata, from which it is separated by the polished 

 clypeus. 



Type.— Cat. No. 18164, U.S.N.M, 

 ft 84 . Abdomen very finely punctured, shining black. A. gardineri Cockerell. 

 c 84 . Abdomen not punctured, and with no greenish tint. 



a 86 . Abdominal bands broad and gray; hair of hind tibiae longitudinally bicolored, 

 white and fulvous. 



ANDRENA LEWISII Cockerell, variety A. 



Florissant, Colorado. June 23. On Solix brachycarpa. (S. A. 

 Rohwer.) 



Female. — Length, 9^ mm. Black. Pubescence ocherous, beneath 

 and on face dull white. Facial quadrangle broader than long. 

 Process of labrum emarginate. Clypeus shining, with strong irre- 

 gular punctures and a smooth median line. Facial foveae seen from 

 above very pale brownish, moderately broad, ending below at about 

 level of top of clypeus. Antennae dark; third joint scarcely longer 

 than next two combined. Mesothorax granular, without distinct 

 punctures. Scutellum shining, with a median groove. Area of 

 metathorax granular, scarcely defined. Tegulae piceous. Wings 

 hyaline, faintly dusky, stigma and nervures amber color. Basal 

 nervure falling short of transverse median. Second submarginal cell 

 receiving first recurrent nervure beyond middle. Hair of hind tibiae 

 brownish fulvous above and white beneath, on inner side of hind tarsi 

 pale golden. Abdomen moderately shining, not punctured; second 

 to fourth segments with broad bands of dull white hair and a some- 

 what imperfect band on first. Second segment in middle depressed 

 about one-third. Hair at apex light reddish. 



(Except for the bicolored hair of hind tarsi, this exactly agrees with 

 A. lewisii. It is certainly the same species.) 



o 86 . Abdominal bands narrow and white; hair on hind tibiae shining white, not 

 bicolored. 



