TRANSACTIONS 



OF THE 



L I N--N-E-A-N-- S a C IETY, 



I. Obfervations refpefting Jome rare Britifb Infetts. By the late Mr, 



Willi am Lewin, F. L. S. 



Read November 5, 1793. 



I. Sphinx apiformis. Linn. 



THE larva of this infect feeds in the bark of the poplar tree, 

 near the bottom, and changes to a pupa in April in the cavity- 

 it has eaten out, enclofing itfelf in a cafe formed of fmall pieces of 

 the wood. The perfect fly comes forth in June. The male may be 

 readily diftinguiihed by its anus being (lightly tufted. The margins 

 of its wings are alfo darker, and not near fo broad as in the female, 

 which is moreover the larger of the two. \ 



I have found thefe larvae of different fizes in March. I took two 



of the fmalleft, and, making a hole in the bark of a lime tree, put 



, them in and enclofed them. The following fpring they were found 



arrived at their full fize, and they afterwards changed ed" pupa at 



Vol. III. - — B _ — the 



