NOTES ON ACULEATE HYMEXOPTERA. 43 



Andrena Ronce. This species was scarce, it frequents the 

 flowers of the blackberry. 



Andrena pil/pes. Not so abundant as we have found it 

 in other localities in Kent ; it frequents the blackberry and 

 the Mallow. 



Andrena thoracica. Not uncommon on thistle heads. 



Andrena bicolor. Very plentiful on the flowers of the 

 common mallow ; the male proves to be, as we conjectured, 

 the Melitta pilosula of Kirby. 



Andrena nigric&ps. Two specimens were taken in com- 

 pany with A. simiUima. 



A. simiUima. Extremely abundant on the flowers of the 

 blackberry ; this species was taken at the foot of the cliffs, 

 half a mile beyond Kingsdown. Although the two pre- 

 ceding species closely resemble each other, and were taken 

 in company, still, to a practised eye, their specific differences 

 are obvious; A. nigric&ps is a larger insect, covered with 

 black pubescence on the face, cheeks and clypeus ; the floccus 

 on the posterior femora is sooty-black. 



Andrena Coitana. Very plentiful, frequenting the flowers 

 of the IS [allow ; we were too late for the males. 



Cilissa hcemorrhoidalis. This very local bee we took on 

 the slope which runs up into the fields at the foot of the 

 first cliff beyond Kingsdown; it frequents the Harebell; we 

 never saw it on any other flower. 



Cilism leporina. The male of this species we have fre- 

 quently met with, the female always being rare ; except on 

 one occasion, we never met with more than single specimens ; 

 on the slope at Kingsdown it abounded ; unfortunately we 

 were too late to get fine examples, but their numbers were 

 astonishing ; it frequented a species of Vetch, but we have 

 taken it on the white Dutch clover. 



