141 



butterfly according to the state of the weather, or according to 

 the locality occupied by each individual. One may be in sun- 

 shine while the other is in shade, and in the Catskills or New 

 England, one may be feeding when the other would be unable 

 to find a mouthful, — perhaps has been buried under a snowbank, 

 or has wintered in some cold glen, like the Stoney Clove in 

 Hunter. So that the date of emerging of individuals of the 

 first generation will vary many days, or a month, and this and 

 other influences keep up a similar variation in the generations all 

 the year. 



THE LARVtE of CATOCALA FLEBILIS AND CATO- 

 CALA AMATRIX. 



By D. S. Kellicott. 



Flcbilis. — Two larvae were taken on the trunk of a hickory 

 Carya alba) at Hastings Center, N. Y., July 25, 1881. Length, 

 58mm., width of body 6.75 mm., width of head and first thoacic 

 segment 4.25 mm., onisciform. The color is gray with a greenish 

 tinge ; under a lens it is faintly pink. The dorsal line is rather 

 faint, made up of closely placed lines of black dots ; the sub- 

 dorsal is wider and more conspicuous, on each abdominal ring 

 there is an illy-defined >- or > situated in this line ; the stig- 

 matal line or stripe is still more distinct and continuous, the 

 large, black-ringed, elliptical spiracles are situated, except the 

 first, wholly in this line. The papillae are white, each bearing a 

 fine brown hair; those on the first thoracic ring, however, are 

 dark, or black ; on the abdominal rings the posterior pair are 

 situated in the angle of the >- referred to above. The bluish 

 gray head has lines of confluent whitish spots so arranged that 

 the surface has the appearance of watered silk ; on the top of 

 the head there are four brown dots placed at the angles of a 

 square. There is a black line extending from the articulation of 

 the jaws half-way up the cranial lobes in front of the ocelli. 

 Head flattened. Feet of the same line as the body, ornamented 

 with black slashes. The lateral fringes are hoary. The ventral 

 surface bluish white with black and flesh-colored spots; thus: the 

 thoracic rings have each an elliptical patch of the latter color; 

 fourth, fifth, tenth and eleventh rings have each a similar black 

 one ; the sixth and seventh rings have reddish spots bordered in 

 front with black ; rings eight and nine are provided with large 

 spots similar in color without the black border. 



One larva spun its loose cocoon among the leaves June 28, 



