BEE CLEAR-WING. 
173 
the others edged with black, the fifth and the poste- 
rior two brown on the back and having a line of 
the same coloxir on the sides. AH the Avings are 
transparent, with the edges, the nerrures, and a 
transverse stripe on the primary pair rust-brown ; 
the fringe tawny -brown. The thighs are yellow on 
the outer side and dusky internally, the rest of the 
leg yellow. 
The caterpillar is pubescent and whitish, having 
a dusky line along the back and a dark-brown head. 
It lives in the stem and roots of willow and poplar 
trees. Its perfect insect likewise frequents these 
trees, and is not scarce in certain situations ; such 
as Epping Forest, Coombe Wood, &c. It is usually 
found in June and July. — Only one other species 
besides the above seems to inhabit Britain, viz. 
T. craironi/arme, Hornet Clear-wing, which has 
the head and thorax brorvn, the latter with a rust- 
brown spot on each side behind, and the abdomen 
cinctured with two black bands. 
