THE ENTOMOLOGIST. 835 
but slightly wider, as already noticed, at the third segment; the 
twelfth segment is slightly elevated dorsally, and the elevated 
portion bears two small tubercles or warts placed trans- 
versely; the dorsal surface is convex and _ transversely 
wrinkled; its division into segments is perceptible, but not 
conspicuous; the ventral surface is flat; the dorsal slightly 
overlaps the ventral surface, its margin being dilated and 
fringed with a series of slender fleshy appendages, bearing 
the same relation to the body, both in position and appear- 
ance, as the rootlets of ivy to the climbing twig from which 
they emanate. ‘The legs are rather long, incurved or sickle- 
shaped, and the claws sharp-pointed, admirably adapted for 
clinging to the lichens growing on the perpendicular surface 
on which the larva constantly resides; the claspers are ten in 
number ; the ventral pairs increase in size as they recede from 
the head, the first pair being the smallest, the second slightly 
larger, and the third and fourth still larger, longer and 
stronger ; the anal claspers are slightly spreading, and extend 
considerably beyond the rounded extremity of the anal flap. 
The head and body emit a number of scattered hairs, each 
seated on a minute wart. The colour of the head and body 
is green-gray, the head being more decidedly gray and the 
body more decidedly green; the head has two crescentic 
black marks on the face, and two black spots on the crown; 
the cusps of the crescents are directed towards the crown; 
the component parts of the mouth are black, and there is a 
black transverse line immediately above it; the ocelli on 
each cheek are black, and surrounded by a slender black 
ring; the body has numerous black spots and dots irregular 
in size and shape; the legs are spotted or annulated with 
black, and the claws entirely black. The life-history of this 
interesting insect is entirely unknown to me: the full-grown 
larva I have described, this 2nd day of June, is the only one 
I ever saw; it was most obligingly presented to me by Mr. 
Machin, whose knowledge of our British Lepidoptera is 
almost unsurpassed, and whose contributions to the mass of 
knowledge collected in the ‘ Entomologist’ are familiar to all 
its readers. A word remains to be said about the scientific 
name and the affinities of this interesting insect: it is the 
Phalena sinuata of Villars; the Geometra flexularia of 
Hiibner; the Pyralis flexulalis of Haworth’s ‘ Prodromus ;’ 
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