52 andrenid^. 



the head closely punctured, the clypeus strongly so. Thorax with the 

 disk not very closely punctured, with pale fulvous pubescence above, 

 beneath it is whitish ; the wings fulvo-hyaline, their apex clouded, 

 the nervures ferruginous ; the tarsi and posterior tibiae ferruginous 

 and with fulvous pubescence ; the noccus at the base of the pos- 

 terior femora beneath white. Abdomen closely and finely punc- 

 tured ; the apical margins of the segments testaceous, the second 

 and following ones with short pale pubescence, that on the apex 

 bright fulvous. 



Rah. Mexico, Orizaba. 



7. Andrena discreta. 



Female. Length 6 lines. — Head and thorax black ; abdomen ferrugi- 

 nous, with the base black. Head very closely punctured ; the face and 

 cheeks with fulvous pubescence; tips of the mandibles ferruginous. 

 Thorax finely and closely punctured, and clothed with fulvous pu- 

 bescence ; wings fulvo-hyaline, the nervures aud stigma ferrugi- 

 nous, faintly clouded at their apex ; legs ruf o-piceous ; the tarsi 

 and posterior tibiae ferruginous, their pubescence fulvous ; the 

 noccus at the base of the posterior femora pale fulvous. The ab- 

 domen with short fulvous pubescence ; the apical margins of the 

 segments pale rufo-testaceous and fringed with fulvous pubescence ; 

 the fourth and fifth segments more or less fuscous at the base. 



Rah. Mexico, Oajaca. 



8. Andrena sodalis. 



Female. Length 5 lines. — Black, the general pubescence above 

 fulvous ; abdomen smooth, shining, aud impunctate. The face with 

 pale pubescence ; the clypeus shining, and having deep scattered 

 punctures ; a deep channel along the inner margins of the eyes, on 

 the sides of the face. Thorax with thin fulvous pubescence above, 

 beneath it is paler ; wings fulvo-hyaline, the nervures, tegulae, and 

 stigma rufo-testaceous ; the apical joints of the tarsi, the posterior 

 tibiae, and basal half of the first joint of the tarsi pale ferruginous ; 

 the scopa on the posterior tibiae bright pale fulvous. Abdomen 

 oblong-ovate ; the apical margins of the second and third segments 

 fringed laterally, and the fourth entirely, with pale fulvous pubes- 

 cence, that on the apical segment is fuscous. 



Rah. Mexico, Oajaca. 



9. Andrena simulata. 



Female. Length 5 lines. — Black ; thorax and abdomen smooth and 

 shining, the former with fulvous pubescence above. Head opaque, 

 the clypeus shining, with strong punctures, and a longitudinal smooth 

 impunctate line in the middle ; the face with a thin pale pubes- 



