358 Proceedings 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 parallel 

 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 were 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, anterma3 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 tibiae ; 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. 

 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 

 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 

 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. 



