British Hymenoptera. 275 



(1) 4. (J , clypeus black. $ , anal fringe pale or 

 golden, or dark, not strongly punctured, often 

 banded. 



(8) 5. Species very small and black ; pubescence silvery 



or grey ; abdomen rarely banded. 



(7) 6. Abdomen not punctured .. .. .. .. viinutiila. 



(6) 7. Abdomen punctured . . . . . . . . nana. 



(5) 8. Species not very small; pubescence of thoi'ax 

 brown. 



(14) 9. Hairs of the face brownish or pale fulvous. 



(11) 10. Metathorax clathrately rugose at the base . . proxima, 



(10) 11. Metathorax finely rugose, not clathrate. 



(13) 12. g^ , abdomen with only short lateral white streaks. 

 2 with a dense tuft of curved hairs on each 

 side of the metathorax . . . . . . . . dormta. 



(12) 13. (J , abdominal bands almost entire. J , meta- 



thorax simply hairy at the sides . . . . Afzeliella. 



(9) 14. Hairs of the face below the antennas silvery white Wilkella. 



42. Andrena humilis, Imhoff. 



Imhoff, Isis, 1832, ix,, p. 1201 =fulvescens, Smith, Cat. 

 Brit. Hym., 2nd ed., p. 60. 



Black, clothed with ochreous hairs, c? , clypeus white ; 

 abdomen dull in both sexes, very closely and rugosely 

 punctured ; anal fimbria golden ; tibiae and tarsi black, 

 clothed with golden hairs. Wings slightly dusky ; ner- 

 vures testaceous. 



<? . Vertex of head, face above the antennae, and 

 thorax above, clothed with dull ochreous-brown hairs, 

 clypeus and under side of the thorax with white hairs. 

 Clypeus white, with a black dot near each side. Meso- 

 thorax finely rugose and rugosely punctured. Metathorax 

 finely rugose and clothed with hairs, except on the basal 

 area. Abdomen clothed with long pale hairs on the 

 basal segment and at the sides, with shorter pale hairs 

 on the other segments, becoming golden on the 6th and 

 7th ; surface rugose and rugosely punctured ; apex of 

 each segment smooth and somewhat piceous ; beneath 

 clothed with long pale hairs ; apical ventral valve 

 truncate and testaceous at its apex. Legs clothed with 

 pale hairs. 



2 . Face sparingly clothed with pale fulvous hairs. 

 Mesothorax dull, finely rugulose and very closely punc- 

 tured, with a few short pale hau'S on its upper surface ; 

 beneath the wings clothed with long hairs. Scutellum 

 somewhat shining and closely punctured, Metathorax 



