62 



head covering and extending behind the eyes ; a smaller one before it, narrowly sep- 

 arated from it, from the vertical patch and by the pale suture from the black trian- 

 gular plate above the mouth. Width of head nearly 1™™. Body somewhat flattened, 

 robust, of nearly uniform width, but joint 13, smaller. Thoracic feet rather slender, 

 abdominal present only on joints 8, 9, 10, and 13. Cervical spot black, bisected, 

 curved behind, each part containing in front a yellow wart. Three rows of warts, 

 one per segment, the second wart on joint 2, small: — (1) above subdorsal line, (2) 

 below it, (3) substigmatal, and a fourth row, small, concolorous with the body situated 

 below the subventral fold above the bases of the legs. All bear a few fine white hairs, 

 those at the extremities of the body, long. Body pale yellow in color, a black dorsal 

 shade band and a fainter subdorsal one, the latter seen by a lens to be broken into 

 somewhat oblique portions, neither reaching the extremities. Eows of warts (1) and 

 (2) are partly black and partly pale brown, row (3), ocher. Length 12™^. 



The cocoon is constructed on a piece of wood from little bits of the bark, thus ex- 

 actly resembling it in color. It is flat at the sides and narrow, tapers upward from 

 the posterior end and is truncate anteriorly at the end where the moth emerges. The 

 little pieces of bark of which it is composed are about three times as long as wide, 

 are laid on regularly lengthwise, not overlapping, and fastened with silk. Length 

 12™™, width 2™™, greatest height at truncated end 2.5™™. 



The pupa is cylindrical, the last segments rounded and without cremaster, but a 

 few fine short hairs sparsely distributed. Color light brown. 



Food-plant. — Witch-hazel (Ramameli.t virginica). There is only one brood a year, the 

 larvae forming their cocoons about the Ist of July. The moths appear early the sub- 

 sequent spring. During their whole history the larvae eat only the upper surface of 

 the leaf, leaving the veins and lower epidermis almost untouched. 



Larvae from Dutchess County, New York. 



Nerice bidentata Walker. 



Mature Larva. — Head, flattened at the sides, a little depressed at vertex ; green, 

 with a black line on the angle between front and sides, which is shaded with white 

 posteriorly ; some irregular white marks in front and at the sides, the principal one 

 being a line in front bordering the triangular plate and continued irregularly to the 

 vertex subparallel to the central suture. Mouth and antennae pale ; ocelli black ; a few 

 short whitish hairs. The body does not reach the vertex of head for joints 2 to 4. 

 Joints 5 to 13 have each a dorsal process somewhat modified in shape on the several 

 joints. Those on joints 6 and 12 are the longest and rise abruptly in front from the 

 suture before the segment, terminate at the top in two rounded points of a yellowish 

 color tipped with brown, of which the anterior one is the larger and longer, and slope 

 evenly to the posterior edge of the segment. The other processes are similar in 

 structure and coloration, but are shorter, the two tips rather closer together, and 

 tend, on the posterior segments, to become cleft on the dorsal line. This is first dis- 

 tinctly seen on joint 9, becomes more prominent on the succeeding segments, while 

 the process on joint 13 lacks the posterior tip and the brown coloration, and consists 

 of two short points placed side by side. Color of body leaf-green, the subdorsal space 

 covered with greenish white, but leaving the ground color to appear as a dorsal band 

 and an oblique line on each joint. The white color is continued down the sides 

 nearly to the spiracles. A faint, fine, pale stigmatal line. Spiracles white with a fine 

 black border. On joints 2 to 6 and 13 are indications of a dark red subventral line. 

 Abdominal feet pale reddish, marked with two black lines; thoracic, green with a 

 black line. 



Food plant.— 'EAui {Uhnus americana). The species is double-brooded in this State, 

 and the winter is passed in the pupa. Larva from Dutchess County, New York. 



Schizura ipomcBce Doubleday. 



Mature Larva. — Head higher than wide, flattened a little in front, not distinctly 

 bilobed ; pale brown, with a band from vertex of each lobe composed of two black 

 lines inclosing a space of the ground color, in which is a pulverulent bluish line. 



