63 



Moth. — Palpi reddish-brown ; head, thorax, in front and tegulse (shoulder covers) 

 whitish or pale-grey, with a large deep chestnut semi-oval patch on top of the thorax ; 

 body brownish-grey ; fore wings angulated and excavated on the hind margin ; grey 

 colour fringed with rosy and with dark-brown streaks and patches ; hind wings rosy, 

 along exterior and terminal border yellowish-grey. The ocellus (or eye spot) is black, 

 emitting a short broad line to inner angle, and with two or three blue pupils ; these last 

 give rise to the name geminatus, or twin-spotted, and cause the moth to be readily 

 distinguished from the preceding one, S. exccecatus. 



20. Cressonia juglandis. Abbot and Smith. 



Sph'iiix juglandis, Abbot and Smith. 

 Amorpha dentata juglandis, Hubner. 

 Smerinthus juglandis, Walker, C. B. M. 



" " Clemens, Svn. N. A. Sph. 



" " Morris, Syn. N. A. Lep. Sm. Ins., p. 213. 



" " Harris, Ins. Inj. Yeg., p. 328. 



Cressonia " Grote and Robinson. 1865. 



Mature larva. — Head large, pointed apex, colour light-green, with white granulations 

 on the sides ; body slender, tapering towards the extremities ; pale apple-green, granu- 

 lated regularly on the transverse wrinkles, seven oblique lateral bands, lighter green, 

 approaching white (Lintner), or crimson-edged beneath, with pale-yellow (Clemens), or 

 bright-yellow (Packard). Caudal horn brownish, with dense blackish spinules ; feet 

 dark reddish-brown. Length about two and a quarter inches. 



Feeds on Black Walnut, Juglans nigra, Hickory, Gary a alba. Iron Wood, Ostrya 

 Virginica, and Wild Cherry. 



According to Dr. Clemens, the position of the larva when at rest is not sphinx-like ; 

 it is extended along the mid-rib of a leaf, and when disturbed throws its head from side 

 to side, making a crepitating noise. It attains its growth about the middle of September, 

 and undergoes its transformation in a cell just beneath the surface. 



Pupa is blackish-brown, with the terminal segments of the abdomen flattened ; 

 several conical granulated projections or prominences on the front of the head case and on 

 the leg cases. 



Moth. — Head and thorax pale fawn colour or greyish, with a dorsal brownish stripe ; 

 abdomen fawn colour ; front wings, pale grey, with lilac tinge, with broad yellowish- 

 brown shade across them ; hind wings ochraceous-brown, or dull fawn colour, with a 

 central light-coloured band edged by dark lines on each side. No eye spots, or occelli on 

 the wings. 



21. Amorpha modesta, Harris. 



Smerinthus modesta, Harris, Agassiz, Lake Sup. 



" modestus. Walker, C. B. M. 



" modesta, Clemens, Syn. N. A. Sph. 



" modesta, Morris, Syn. N. A. Lep. Sm. Ins., p. 210. 

 Aw,orpha modesta, Hubner. 



Larva when young is green-coloured, and has a short purple caudal horn, which it loses 

 almost altogether at maturity. It measures when full-grown about three inches, being 

 three-quarters of an inch in diameter. The breathing places small and rust red. Legs 

 brown ; prolegs brownish-yellow ; yellowish- white oblique lines on the side, which are 

 much more visible in the earlier stages of the larva. 



Feeds on the Lombardy poplar. 



Pupa two inches long, cylindrical and dark chestnut-brown, terminating in a point or 

 thorn. 



