358 Froceedhujs of the Royal Physical Society. 
middle forming part of a ridge or row of small projecting 
points, which runs down the middle of the back of the 
thorax. A shorter projecting line of points runs i)arallel 
to this one, on each side. There are two projecting points 
which lie behind this central ridge, and form the first of 
a series of pairs of small processes on each segment, and 
on each side of the mesial line of the back of the abdomen. 
The abdomen terminates posteriorly in two sharp and 
slightly bent hook-like processes. 
3. The Moths or perfect insects were much destroyed by 
being kept long in spirit, so that it was only with great 
difficulty, and by comparing one with another, that an 
attempt could be made to describe them. Their appearance 
was generally that of long-shaped, greyish-coloured moths, 
and they differed altogether from Deiopeia pulchella. They 
varied slightly in size. Several measured about fths of 
an inch in length, while others w^ere apparently a little 
more than fths ; and one which, however, wanted the head, 
was about fths or so in length ; differences probably 
simply sexual in character. The head is small, eyes 
large, antennae long and filiform, with a series of comb- 
like processes projecting from their lower edge, and becom- 
ing gradually shorter towards their extremities, which 
are simple, having no projecting processes. The fore 
legs have apparently a pair of spurs projecting from 
about the middle of the tibise ; the second have a pair 
of terminal tibial spurs; and the third, a pair springing 
below the middle, and also a terminal pair of tibial spurs, i 
The wings are narrow, parallel to body, and, when closed, \ 
apparently cover the abdomen, which is large and full. ; 
The general colour of the insect appears to be grey, or ' 
greyish brown, with probably a longitudinal stripe of a j 
darker colour, brown or black, along each side of the thorax ( 
above, leaving a light-coloured space in the middle; the \ 
wings grey, with a somewhat triangularly shaped patch of j 
black across their posterior and external angles, and a black 
line or edge proceeding from it along the whole posterior 
margin. The lower wing shows the same character, but 
apparently less distinctly marked. 
