14 (June, 
Description of the larva of Pempelia formosa. — For examples of this larva 
Iam indebted to Mr. F. Franks and Mr. W. Machin, from whom I received them 
on the 21st of July and the 19th of August, 1868. 
Their usual food appeared to be the leaves of elm, though, in confinement, I 
found they would also eat birch; and, when a fresh supply was given to them, 
their first proceeding, before satisfying their appetite, was either to spin two leaves 
together or to turn down the corner of a leaf with a few threads: under this 
shelter they began to feed ; and in a day or two a considerable number of threads 
would be spun, agglutinating the leaves together in various directions. The earliest 
were full fed by August 20th, and the latest by the the 15th September. 
The full-grown larva is about five-eighths of an inch or little more in length, 
tolerably cylindrical, and, when looked at from above, of nearly uniform bulk, but, 
viewed sideways, the three hinder segments are seen to taper beneath towards the 
anal extremity ; all the seements are plump, and rather deeply divided; the head 
is rounded at the sides, and a little flattened in front. 
The ground colour is a deep olive-green, much freckled with darker green ; 
the usual dorsal and sub-dorsal stripes are of this colour, each of them being 
enclosed within two rather sinuous fine lines of yellowish-olive; another such line 
runs between the sub-dorsal and the spiracles ; the spiracles are whitish, outlined 
with black, and immediately beneath them isa whitish-green line, which is followed 
by a similar one just above the legs, so that altogether there are no less than 
twelve of these pale lines on the back and sides; the ventral surface is dull 
green: the head is of the freckled ground colour, the mouth blackish, with the 
papillz whitish ; the second segment has a shining plate on which are faintly seen 
the colours and lines of the back; on each side of the third segment in the sub- 
dorsal region is a conspicuous transverse oval white spot, bearing a black dot 
within its lower margin. 
The tubercular dots are blackish, each emitting a rather long greenish hair ; 
though amongst these larvee were some with whitish-green dots, and two that 
varied in the ground colour, being of a bluer green than the others above, and 
whitish-green beneath. 
The moths appeared from July 12th to 17th, 1869.—Ib. 
Description of the larva af Eupithecia irriguata, Hib.—Full grown larva 18-20 
millimétres in length, very slender, almost equally thick throughout, but slightly 
thinner towardsthehead. Body finely and transversely ribbed ; sutures of segments 
little developed. Ground colour in the young larva, citron-yellow, afterwards yel- 
lowish-green, on the back sometimes bluish-green. Head moderately large, brown, 
without markings ; front-legs yellowish brown; other legs, and anal pro-legs, wine- 
red, with pale margins. On the back, excepting the two first segments, are double 
red spots in the form of two trapeziums united at their smallest sides, yet with the 
corners somewhat rounded, so that the spot assumes a biscuit shape, with the 
narrowest part corresponding with the incision of the segment—towards the anal 
segments these dorsal markings fade away, whilst on the anterior segments they 
are smaller and more compressed. Anal flap reddish-brown, with pale margins, 
confluent with the last dorsal spot. Dorsal line only visible on those first segments 
