172 PROCEEDINaS OF THE NATIONAL MUSEUM. vol.xxi. 



line in the shape of an oblique dusky streak on the costa. The trans- 

 verse posterior line is fairly well indicated. It is single, blackish, a 

 little lunulate, almost continuous, and is i^ receded by a pale shading. 

 There is a vague blackish streak extending inward from the outer mar- 

 gin through the transverse jiosterior line in the submedian interspace. 

 An obliciue dusky shading begins opposite the cell and extends to just 

 below the apex. This shading is made up jirincipally of blackish 

 streakings in the interspaces, Avhich are longest between veins 3 and 4 

 and 4 and 5, and become rapidly shorter above. The orbicular is very 

 faintly discernible as an indefined whitish mark. The reniform consists 

 of an imperfect blackish lunule, a little marked by a paler shade. The 

 secondaries are white. Beneath white, black powdered, without mark- 

 ings in the specimens before me. 



Expanse, 1.80 to 2 inches (45 to 50 mm.). 



Habitat. — Massachusetts, May, June, and August. 



This insect can not be mistaken for anything else. The long, narrow, 

 pointed wings, in which all the markings are washed out, are unmis- 

 takable. As compared with oblinita, its nearest ally, it is yet longer 

 winged, as a whole larger in size, the ordinary markings almost entirely 

 washed out, and only the transverse posterior line at all evident. 

 Another point of interest is the absence of the terminal dots, which in 

 oblinita are very i^rominent. Three specimens only are under exami- 

 nation, and all of these are, unfortunately, females. The head is 

 retracted ; the tongue often softer than in oblinita. The palpi are very 

 small and weak, hardly reaching to the front. 



LARVA. 



Stage V. — "Head medium, smooth, flattened, greenish yellow, front 

 black; two yellow lines above the clypeus, following its outline, meet- 

 ing at the apex; U faint, horizontal, yellow mark below the clypeus. 

 General color of upper surface pale yellowish green, stigmatal line 

 yellow and raised. A tuft of diverging yellow hairs arises from each 

 tubercle. Spiracles small, brown, oval. Under surface pale green, 

 thickly mottled with brown. Feet black; legs ])ale green with a few 

 white hairs. Length, 22 mm." (A. H. Kirkland, manuscript.) 



Stage VI. — [Green] -'Dorsal line black. Tubercles light green. Only 

 white hairs found on the stigmatal row of tubercles. Feet and outside 

 of prolegs black. The hairs on the sides of the body are longer than 

 those elsewhere. Spiracles large, oval, surrounded by black. Length, 

 25 mm." (A. H. Kirkland.) Width of head, 3.6 mm. 



Cocoon. — Spun between leaves, composed of tough, nearly white silk, 

 rather thin but opaque. Shape, elongate elliptical, single. 



Pupa. — Cylindrical, of nearly even width to the end of the movable 

 segments, then rather sharj)ly tapering. Thorax and cases wrinkly; 

 dorsal abdominal segments with coarse, erect, blunt spine-like gran- 

 ules, except on a narrow, posterior, smooth, raised rim on each segment; 



