• BEECH CATERPILLARS. 517 
Moth. — Moths of this genus have loug, rather narrow fore-wings, with the apex 
acute, the outer edge much bent and sinuous. Fore-wings pale whitish, with fine 
cross specks as usual; the basal cross line is heavy on the costa and bent sharply 
outwards on the subcostal, with a smaller angle on the median vein and a larger 
angle on the submedian vein. The great but obtuse angle made by the outer line 
extends quite near the outer edge of the wing. Half way between the apex and the 
outer line two brown costal patches ; two unequal black patches near the internal 
angle. Beneath, the lines aud cross specks are reddish brown. Expanse of wings, 
33 mm . The specimen does not agree with either of the four figures in my Monograph 
of Geometrid Moths, differing especially in the shape and direction of the outer line. 
According to Mr. W. Saunders, two larvse were found by him on the 
beech the 10th of September, in London, Canada. Two of them entered 
the chrysalis state on the 19th of September, having formed a rude case 
in which to secrete themselves by binding two leaves together with 
threads of silk. One of them, he says, produced the imago on the 
18th, the other on the 21st of May following. 
6. Geometrid larva. 
This caterpillar was found on the beech on an island in Casco Bay, 
Maine, July 30. 
Larva. — Body slender, cylindrical, smaller in the middle than at either end. Head 
broader than the body, full and rounded ; the lateral ridge distinct. Anal legs large 
and broad. Supra-anal plate broad, with two horizontal bristles arising from two 
fleshy tubercles. The body is pale yellowish green, with no other markings. Length, 
7. Geometrid larva. 
This caterpillar occurred on the beech at Providence, May 30. 
Larva. — Head large, broad, smooth, as wide as the body ; pale green, slightly 
spotted with reddish. Body somewhat flattened, plain ; no tubercles. Anal legs 
very broad and large ; supra-anal plate large, broad, rounded behind, surface con- 
vex, full; prothoracic segment broad, flaring on the front edge, slightly wider than 
the head. Body purplish ; three double blackish lines, forming a broad dorsal stripe. 
Behind each spiracle is an oblique raised ridge, with a black speck on it behind and 
below each spiracle. Supra-anal plate aud anal legs greenish. Length, 13 mm . - 
8. Cryptolechia faginella Chambers. 
The larva sews together the leaves of the beech in August and early 
in the autumn. We copy the following description from Mr. Chambers : 
The close resemblance ot some allied species makes a more detailed description of 
this species than that heretofore given necessary. 
Moth. — The palpi are ocherous, with a blackish line along the under surface of the 
second joint, continued on to the apex of the third, and another on the outer and 
one on the inner surface of the third joint. Cryptolechia (Psilocor sis) quercicella 
Clem., according to Dr. Clemens, has the third joint black, with two yellowish- 
white stripes in front. I, however, have not seen the species, and I know from 
experience how easy it is to make a mistake as to the number and position of these 
lines. A species from Texas which I formerly (Can. Ent., vi, p. 231) identified with 
faginella, but which I now consider distinct (vid. post^, and an undescri bed" species, 
of which a single specimen is before me, have the palpi exactly as I have described 
them in faginella— that is, the upper surface of the third joint is ocherous instead of 
black, as Dr. Clemens' account would make it. C. faginella has the head ocherous- 
yellow, and the thorax of the same color, only darker, as if tinged with fuscous. In 
