OSMIA. 299 



mens. A very few days serve for the hatching of the 

 larva, which spins a slight silken cocoon, and in this 

 dormitory it reposes until its season again comes round. 

 Under the influence of the following first genial spring 

 weather, the larva is transmuted into the pupa, and the 

 active little imago comes forth upon the settlement of 

 our variable spring, in the merry days of June, and thus 

 is perpetuated the circle of its existence, but which is 

 sometimes abridged by its special parasite, the pretty 

 little Stelis octomaculata. Many of the species in the 

 males are distinguished by a peculiar armature of the 

 apex of the abdomen ; the second being named by Kirby 

 from the circumstance. A very remarkable singularity 

 distinguishes the males of the third species, in the fringe 

 of short hair that runs along the flagellum of its an- 

 tennae. This, I believe, was first noticed by the late 

 Mr. Bainbridge, a very active practical entomologist, 

 who took the insect at Darenth or Birchwood, and dis- 

 tributed specimens with this manuscript name attached, 

 which has since been appropriated by another entomo- 

 logist to whom the science was wholly unknown at that 

 time, but as it is scarcely consistent with scientific 

 courtesy to adopt such a course, and as the MS. names 

 of Linnaeus and Kirby have been retained, where it 

 was authorized by their being attached to undescribed 

 species, I have restored to Mr. Bainbridge his just 

 rights, and have claimed the same for myself, in the 

 case of Andrena longipes, and which many cabinets must 

 still possess with my name attached, in my own writing, 

 unless their possessors have chosen to adopt the illegiti- 

 mate parentage ; for the entomologists of my own stand- 

 ing well know that I always freely distributed speci- 

 mens to all who desired them of the many very desirable 



