BEECH CATERPILLARS. 517 



Moth. — Moths of this genus have long, rather narrow fore-wiugs, with the apex 

 acute, the outer edge much beut and sinuous. Fore-wings pale whitish, with fiue 

 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 and cross specks are reddish brown. Expanse of wings, 

 83""". 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 larvte were found hy 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. Geovietrid 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 au oblique raised ridge, with a black speck on it behind and 

 below each spiracle. Supra-anal plate and anal legs greenish. Length, L3"^™. 



8. Cryptolechia faginella Chambers. 



The larva sews together the leaves of the beech in August and early 

 in the autu mn. 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 alongthe under surface of the 

 secondjoint, continued on to the apex of the third, and another on the outer and 

 one on the inner surface of the third joint. Cryptolechia (Psilocorsis) 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 nuoiber 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. posf>, and an undescribed species, 

 of which a single specimen is before me, have the palpi exactly as I have described 

 them in /a^ineZ/a— 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 



