NYSSIA HISPIDARIA. 1i 
along the spiracles on each side, and on each segment, 
is a small pyramidal hump, those on the sixth segment 
being larger than the others; from each of these 
humps springs a single short hair. The usual tuber- 
cles distinct, black, those on the twelfth segment 
almost taking the character of humps, and lighter in 
colour than the others; a single short stiff hair also 
springs from each of these. The skin has a wrinkled 
appearance. 
General colour of an almost uniform dark brown; 
head chocolate, variegated with yellowish-brown. 
Dorsal line rather darker than the ground colour, and 
bordered on each side with a conspicuous interrupted 
line of rust-coloured marks; between the tubercles 
and spiracular humps are two faint rust-coloured 
lines; there is also a good deal of this rust colour 
along the spiracles, which are pinkish encircled with 
black. A dull rust-coloured stripe (yellow on the 
ninth segment) extends along the centre of the belly. 
Lees chocolate and greyish-white alternately. 
Feeds on oak, and turns to a pupa beneath the 
surface of the ground. (George T. Porritt, June 23rd, 
1870; Hnt., August, 1870, V, 141.) 
NYSSIA LAPPONARIA. 
On the 6th May, 1895, I received from Mr. W. 
M. Christy some ova of Nyssia lapponaria, which he 
very kindly sent to me for the purpose of figuring 
and describing the insect in its various stages; and 
having done so, I have now the pleasure of publishing 
the following life- history and accompanying figures of 
the species thr ough all its stages. 
The ovum is of a compressed oval form, with one 
end rather larger than the other, and measuring in its 
greatest diameter one-twenty-sixth of an inch; the 
surface is delicately and beautifully reticulated with a 
quinquefarious pattern; each cell is mapped out with 
