20 
with a tinge of red on the margins, the tip broadly edged 
with fulvous red, the centre bar black. The hind wings 
have the fringe blackish. The body is black, crossed by 
a broad deep fulvous red ring; the head and thorax are 
also black; the tail-tuft black, with a few minute white 
lines. 
Localities for this species are Battersea, Chelsea, and 
other places near London; Grooby near Leicester, 
Epping, Cambridge, and, I believe, Birmingham. It is 
also said that Nicholas Aylworth Vigors, Esq., M.P., 
obtained it in Ireland. 
The situations where it is to be looked for are osier 
and willow beds. 
The dates of the appearance of the perfect insect are 
in June, July, and August; the latter part of the first- 
named month, and the earlier part of the last. July 5« 
The caterpillar is dull whitish, with brownish spots 
on the second segment, the head of the latter colour. 
The date of the appearance of the caterpillar is in 
April and also in May. 
It feeds on the stems and shoots of different species 
of willow. 
SESIA CHRYSIDIFORMIS. 
Plate V. Figure 8. 
This very rare British insect measures about ten lines 
across. Male: front-wings transparent, black on the upper 
edge and the outer edgeu; the bar, which extends half-way 
across the wing, also black, the tip broadly ended with 
pale orange-red ; the lower edge reddish orange. Hind 
wings black on the edge, as is the fringe. The body 
is black, two of the segments edged on their upper side 
