152 THE CANADIAN ENTOMOLOGIST. 



argemouis, Ckll., from New Mexico, is possibly not separable from 

 fastuosa. 



Andrena discreta, Smith, 1879. 



9 . " Coloured like a big bright cetii ; tubercle emarginate ; area finely 

 rugose, unmargined ; abdominal segments densely clothed above 

 with fulvous hairs, except the basal which is naked." Oajaca, 

 Mexico. When describing A. jessicce I suggested that it might 

 possibly be the <$ of discreta, but it is now evident that this cannot 

 be. 



Andrena soda/is, Smith, 1879. 



" Tubercle r~ —\ ; abdomen shining, though rugulose, and also very 

 delicately punctured ; area not margined nor rugose." Oajaca, 

 Mexico. 



Andrena simulata, Smith, 1879. 



" Labrum almost pointed A I see no definite tubercle ; abdomen 

 smooth, very shining, shallowly punctured ; area without ridge, 

 rugosities slight, longitudinal at base." Orizaba, Mexico. 



Andrena agilis, Smith, 1879. 

 £ . " Labrum looks truncate, I can't see tubercle ; clypeus not all 

 white, but marked with yellow like a $ Ceratina ; abdomen 

 finely punctured ; area rugulose, not clearly defined at sides ; 

 central impression deep?" Oajaca, Mexico. 



Andrena modesta, Smith, 1879. 

 $ . " Sides of propodeum fringed with short white hairs ; area rugulose, 

 not margined ; abdomen finely punctured ; no tubercle to be 

 seen." Oajaca, Mexico. 



Andrena commoda, Smith, 1879. 



9 . " Tubercle pointed (\ ; area not margined, fine basal strigae; abdomen 

 punctured, also aciculate, dull." This nearly agrees with A, pruni, 

 Rob., but the tubercle of that species is not at all pointed. A. 

 commoda is from Canada. 



Andrena flavoclypeata, Smith, 1879. 



$ . '• Clypeus has a third black spot in middle of apex ; tubercle hard to 

 see through hairs, I think a little emarginate ; area not ridged ; 

 abdomen tessellated, scarcely punctured." Locality, Canada. 

 This is regarded as a synonym of A. biptmctata, Cresson, and is 

 well known. The third black spot is not always present. 



