384 HYMENOPTERA ACULEATA. 



The simple mandibles of the male and the black-haired 

 face of the ? separate this species from helvola and 

 fucata; from varians the (J may be known by the longer 

 third joint of the flagellum which in rarians is much shorter 

 than the second, and the ? by the less closely and regularly 

 punctured clypeus, and the pale abdominal hairs. 



In the table of species of Andrena antea, p. 231, division 

 36 should be thus subdivided : — 



36a. (J, tbird and fourth joints of flagellum sub- 

 equal ; ? clypeus irregularly punctured ambigua. 



366. (J, third joint of flagellum much shorter 

 than the second ; ? clypeus more regu- 

 larly punctured varians. 



