389 



pectinated. Apex of tore wings square, outer edge not very convex. Hind 

 wings well rounded, less angulated than usual ; anal angle square, Body and 

 wings of the usual pale-green color; head and antennae white, front bright 

 rose-colored, except on front border. Palpi white; end of second joint and 

 under side of third joint roseate. Both pairs of wings crossed by linear, 

 slightly-waved, white lines. Inner line on fore wing, very near the base of 

 wing, regularly curved ; outer line straight, waved, parallel with outer edge. 

 Costa narrowly edged with white. Fringe white on both wings. Hind wings 

 with the inner line nearer the base of wing than on fore wings, curved regu- 

 larly. Outer line bent outward in the middle, the line not so wavy as on fore 

 wing. Beneath, both lines faintly reproduced (not " avec line seule ligne 

 blanche", as Guenee says). Hind wings and posterior two-thirds of fore wings 

 whitish-green. Outer side of fore femora green, of tibia? dull red; two pos- 

 terior pairs white. Abdomen white, green at hase above, with a conspicuous 

 white spot at base. 



Length of body, J, 0.45, 9, 0.40; of fore wing, <?, 0.G0, 9, 0.5fi inch. 



Roxbury, Mass., June (C. S. Minot); Dedhain, Mass. (F. W. Very); 

 Berkshire County, Mass., July 7 (Shurtleff); Albany, N. Y, June 9 (Lintner); 

 Brooklyn, N. Y. (Graef); Philadelphia, Pa. (Amer. Fnt. Soc); Easton, Pa. 

 (Stultz); Saint Louis, Mo., May 5 (Riley); Pock Island, 111. (Walsh); 

 "Trenton Falls, N. Y ; Orilla, West Canada ; Nova Scotia" (Walker). 



Larva and pupa. — The following description is taken from Mr. AValsh's 

 account of this insect. "Larva ten-footed, cylindrical, its dorsum with curved 

 lateral appendages covered with short, velvety hairs, and similar to those of 

 IAmacodes? hyalinus Walsh, except that they are much shorter and none of 

 them abruptly longer than the others. Of a dingy brown color, and includ- 

 ing the appendages about one-fourth of an inch in diameter. 



"The pupa is of a pale ochreous brown color, varied with reddish-brown, 

 with many fuscous dots, especially along the ncrvurcs of the wing-cases, and 

 with the caudal spine simple. It measures 0.43 inch, including the spine." 

 It feeds on the oak. 



Api.odks rubromauginaeia, sp. nor. Plate 13, fig. 44. 



1 9. — This is rather smaller than any of the other species, but the 

 wings are of the same shape; the apex of the tore wings is a little more 

 rounded than in A. rubrifronlaria, which it approaches in most respects nearer 



