106 ACIDALIA VIRGULARIA. 
July. (George T. Porritt, December 6th, 1877; 
Ent., January, 1878, XI, 18.) 
AGCIDALIA CIRCELLAA. 
Plate CXVITI, fig. 3. 
On the 6th of August, 1865, Mr. Batty, of Sheffield, 
sent me some larve of this species which had been 
hatched early in July. ‘Two of them were nearly full- 
grown, but the rest more than half-grown ; the former 
spun up during the last week in August, and the 
moths appeared about the middle of September, 
whilst the latter have remained nearly stationary, 
scarcely eating anything since | received them. Iam 
thus able to describe the larva at two stages of its 
orowth. 
The smaller ones are of a dark brown all over except 
the back of the segments five to nine, which is occupied 
by a pale buff space; down the middle of this space 
are four little dark insulated Xs, dividing it into five 
long diamonds, with a stripe of the pale colour on 
either side. 
When full-fed the larva is about three-quarters of 
an inch long, slender, tapermg towards the head, and 
rather flattened; the head small and notched; the 
skin very rugose; in attitude it is stiff, not curling in - 
much when disturbed. ‘The colour is pale grey, or 
yellowish-grey above, darker grey below; the sub- 
dorsal line dark blackish-grey; dorsal and spiracular 
lines very fine and whitish in colour; on the anterior 
seoments up to the fifth the dorsal line is edged with 
fine blackish lnes, but on segments six to nine the Xs 
of the younger stage reappear as pairs of blackish 
curved dashes, darkest just at the segmental folds, 
and lighter on the following segment ; and on the same 
sesments these marks are followed by a pair of 
blackish dots and fainter dashes ; the ninth segment is 
