120 ACIDALIA IMMUTATA. 
ventral surface olive-green, thickly variegated with 
darker, and having two almost imperceptible dark 
ereen central lines. In other specimens the belly is 
ereyish in the centre, gradually becoming darker as 
it approaches the spiracular region, where it is smoky- 
black. 
When at rest the food-plant is grasped by the 
claspers, and the head curved inwards. (George T. 
Porritt, September 15th, 1871; Ent., October, 1871, 
V, 408. 
ACIDALIA REMUTATA. 
Plate CXIX, fig. 2. 
Hees were obtained from a specimen of this insect 
which I captured on the 15th June, 1870; they were 
red in colour, and hatched on the 27th of the same 
month. 
By August 9th the larvee had attained to an inch in 
length, when I described them as follows: 
Body rather rough to the touch, slender, uniformly 
cylindrical, and of nearly uniform thickness through- 
out; head the same width as the second segment, and 
notched on the crown ; the face flat ; skin finely ribbed 
transversely, both dorsally and ventrally ; segmental 
divisions not very conspicuous; ground colour dark 
olive-brown, approaching to dull black ventrally ; — 
head light brown, variegated with darker, and with a 
black V-shaped mark, the apex of which is pointed 
upwards, on the upper part of the face; the medio- 
dorsal stripe is composed of a very narrow, interrupted 
and indistinct greyish line; there are no percep- 
tible subdorsal lines, but along the spiracles are several 
greyish-white marks, which are most conspicuous on 
the posterior segments ; on the eleventh segment, at 
each side, between the medio-dorsal and spiracular 
line, is a black spot; the usual dots minute, black; a 
slaty- erey stripe extends alone the centre of the 
