QQ [September, 
I confess I am not satisfied with what I have done about the eggs. 
More careful labour with the microscope than is in my power to bestow 
is needed to make good work here : I should like the micrometer to be 
brought into use for the more accurate comparison of dimensions, and 
a good equipment of condensers and reflectors will be required to make 
quite sure of the colouring and markings of the surface ; and, after all, 
I fancy it will be found that while certain genera — Ennomos and Acidalia 
for example — furnish interesting studies in this stage, there are others in 
which the allied species cannot be safely distinguished in the egg. 
The eggs of Jiolosericata reached me July 17th, 1867 ; larvae hatched 
on the 25th. They fed on the rock rose, Helianthemum vulgare, and their 
habit was to congregate three or four together near the bottom of a 
shoot, strip it for some distance of its bark or skin, and then feed on 
the withered leaves at the tip of the shoot as it hung down : but of 
course I cannot say whether in nature they are to be found singly or in 
company. They ceased feeding during the winter, and were at all times 
very sluggish and quiet in their habits. They moulted for the laot 
time about the end of March, spun up during May, and the moths ap- 
peared June 20th to 29th, 1868. 
Interjectaria. — Eggs obtained here July 12th, 1867 ; others sent 
me by Mr. Brown, of Cambridge, July l7th : larvae hatched on 24th 
and 26th : fed on dandelion and scarlet pimpernel, prefering withered 
leaves, and indeed would eat almost anything withered : spun up in 
May, 1868, and moths appeared June 24th to 29th. 
Scutulata. — Eggs laid July 12th, 1867; larvse hatched on 17th, ate 
withered dandelion, and in the spring seemed very fond of a mouldy 
slice of turnip, which had been put into their flower-pot to catch an 
intruding slug : spun up during May and June ; moths out June 8th 
to July 2nd 
Bisetata. — Eggs sent me by Mr. Doubleday July 26th, 1867 ; larvse 
hatched on 30th ; fed on Polygonum aviculare, and withered bramble 
leaves ; spun up in May ; moths out June 20th to 25th. 
The egg of Jiolosericata is almost barrel-shaped, and perhaps more 
evenly flattened at the ends than any other of the Acidalice ; it is 
covered with a coarser reticulation than interjectaria, and in colour is 
decidedly yellow. 
Interjectaria— the egg is flattened at either end, but not so de- 
cidedly, the reticulation finer, the colour pinkish. 
Scutulata — rather longer in shape, one end flattened, the other more 
conical, covered with minute pits or depressions ; colour whitish, mottled 
with brownish -pink. 
