104 ACIDALIA VIRGULARIA. 
these black marks becoming more and more developed 
towards the twelfth segment; the dorsal markings 
down the back but thin and sheht imitations of those 
described above, and none of them clouded or merged 
together ; the anterior pairs of tubercular dots black, 
and the hinder pairs white, finely ringed with black. 
The pupa is five-sixteenths of an inch in length, 
rather stout in proportion, broad at the thorax, the 
abdomen tapering rather suddenly to a point which 
terminates in six minute bristles, curved at their extre- 
mities; its colour ochreous-brown, broadly marked 
with black on the thorax and back of the abdomen, the 
wing-covers being delicately striated with dark brown. 
(William Buckler, December, 1872; H.M.M., March, 
1873, IX, 246.) 
In July, 1875, I received from Mr. Alfred E. Hudd, 
of Clifton, near Bristol, the eges of Acidalia incanaria. 
They were globular, and pale straw-colour. On the 
29th of the same month they hatched. The newly 
emerged larves were slender, with the body dark green 
and the head brown. They fed on Polygonum aviculare 
until autumn, when they hybernated; still feeding 
a little, however, on withered dandelion leaves on 
mild days all winter. The dandelion leaves had been 
supplied when the knotgrass failed, and was sub- 
sequently their food until their full growth. They 
were spinning up from the middle till towards the end 
of April. 
Length about three-quarters of an inch, and of 
average bulkin proportion. The head has the face flat- 
tened, and is notched on the crown. Body tolerably 
cylindrical, tapering from the ninth segment to the 
head, which is very small. ‘The segments overlap each 
other, making the divisions distinct ; but there is not 
the marked difference between the width of the poste- 
rior and anterior of each segment which is charac- 
teristic of so many of the species in the genus Acidalia. 
Skin tolerably smooth, but with a tough appearance. 
The ground colour of the dorsal surface is stone-grey, 
