﻿NORTH AMERICAN SPHINGID^E. 171 



portion of medio-central and posterior interspaces ; discal spot white and the nervules tipped with blackish 

 at their ends. Posterior wings blackish brown, grayish towards the base and the inner border, and some- 

 times faintly grayish in the middle. 



Collection Acad. Nat Sciences, Philadelphia, and Mr. Edward Norton. 



Egg. ? 



Young Larva. ? 



Mature Larva. ? 



Pupation. ? 



Food-plants. ■ ? 



Geographical distribution. — Pennsylvania, .Connecticut, Massachusetts. 







Measurements 



— a Female. 









HEAD. 



THORAX. 



ABDOMEN. 



BODY. 



ANT. WING, 



Length. 



Breadth. 



Length. Breadth. 



Length. Breadth. 



Length. 



Length. 



2-75 



? 2-00 



4-50 4-50 



10-50 4-50 



16-50 



17-00. 



67. S. Kalmi^e. — Allot & Smith, I. 73, pi. 37 ; Harris, p. 295. Lethia Kalmiae IlUlner, Verz. Schmett. 

 141, 1511. 

 Head and thorax ferruginous brown, paler on the sides ; tegulae with a central and upper black line, 

 metathoracic patches black. Abdomen ferruginous brown with a central black line and alternate whitish 

 and black demi-bands. Anterior wings ferruginous brown, paler in the middle, with two oblique blackish 

 streaks at the base of inner margin and very oblique ferruginous streaks from the costa to disc ; a pale 

 streak in post-apical interspace, margined on each side with ferruginous, and ferruginous and brownish 

 streaks in the remaining interspaces, with a whitish line near the margin edged above with blackish ; discal 

 spot small and ferruginous ; fringes reddish brown. Posterior wings brownish white, with a broad central 

 and terminal black band ; exterior margin reddish brown and fringes of the same hue. 



I have seen a specimen of this insect from the collection of Mr. Arch. Hopkins, of 

 Williamstown, Mass., whose right wing, although somewhat lighter than the speci- 

 mens described, was sufficiently well marked to be readily recognized, but the left 

 was almost entirely hoary, with faint brownish markings. 



Egg. ? 



Young Larva. ? 



Mature Larva. — Head green, with a lateral black stripe. Body fine pale green, deepening on the sides, 

 with pale yellow, lateral, oblique bands edged above with black, which is again bordered with pale blue ; 

 first and second prolegs with a black spot on the sides ; stigmatge orange yellow ; shield and terminal prolegs 

 dotted with numerous brown dots on a pale brownish patch j caudal horn blue, but thickly covered with 

 black tubercles. Length about three inches. 



Pupation. — The larval transformation is subterranean. The pupa dark brown ; the tongue-case half 

 as long as the breast and applied to it, with the extremity bulbous. The larva enters the pupa state 

 during the latter part of August or in September, and appears as an imago in the following June or early 

 in July. 



Food-plants. — I have found the larva nearly full grown on the lilac about the middle of July. Also 

 feeds on the leaves of Kalmise, latifolia. (Allot & Smith.^) 



Geographical distribution. — Canada, New York, Pennsylvania, Massachusetts, Georgia. 



