﻿NORTH AMERICAN SPHINGID^E. 179 



small and scarcely salient ; the palpi rather short and slender, nearly horizontal and 

 not identified with the front ; tongue about one-third as long as the body, not as long- 

 as the thorax ; the antennas longer than the thorax, ending in a short hook with seta. 

 The thorax is thick, sub-globose, but little advanced anterior to the base of the fore 

 wings. The abdomen is cylindrical, tapering near the extremity, and nearly thrice or 

 full thrice the length of the thorax. The legs stout and the hind tibise with two long 

 internal and two short external spurs. The wings are rather broad, the anterior with 

 the tip rounded, the hind margin entire, obliquely convex, and the inner margin 

 somewhat concave above the interior angle. Male. — Antennas ciliferous. Female. — 

 Antennas simple. 



Larva. — Head large, semi-oval, somewhat flattened in front. Body wrinkled 

 transversely and granulated, with a vascular line of fleshy serrations and a thoracic 

 dorsal line of granulations on each side, and with four thoracic fleshy granulated 

 horns ; caudal horn rather short, straight and roughened. The pupa is smooth ; 

 tongue-case not apparent. Transformation subterranean. 



SPECIES. 



82. Quadricomis. — Fawn-color or greenish brown ; hind wings pale brownish, with two indistinct blackish 



lines and broad sub-terminal band. 



83. Repentinns. — Gray, varied with black; hind wings blackish gray, with three parallel black bands. 



82. C. quadricornis Hubn. Harris, p. 293. Agrius Amyntor Exot. Schmett. Lep. II., Sph. III., 

 Leg. IV., Mand. B., Pond. 4. 



Palpi brown. Head grayish or whitish fawn-color. Tborax with the disc fawn-color or greenish brown 

 and whitish on the sides, a short transverse dark colored line before and the tegulas with a central and 

 superior blackish line on each side, with black metathoracic spots. Abdomen fawn-colored or brownish, 

 with a slender black dorsal line and two black stripes on each side. Anterior wings fawn-color, varied with 

 blackish brown, or dull greenish brown varied with black ; costa grayish at the base, with wing of a pale 

 hue above the median nervure and dusky beneath it ; three dark brown irregular lines advance from the 

 basal portion of the inner margin to the disc beyond its middle, and thence retreat to the costa ; discal spot 

 white, with a short black discal dash resting on median nerve ; several sub-terminal blackish lines arise 

 above the interior angle and run nearly parallel to the hind margin to disco-central nervure, whence they 

 retreat to the costa ; black streaks in all the interspaces, with the fringes brown, spotted with white. Pos- 

 terior wings pale brownish, with a sub-terminal blackish or dark brown band and shaded with blackish in 

 the middle or forming indistinct dark colored lines. 



Egg- ? 



Young Larva. ? 



Mature, Larva. — Head pale green, with an indistinct whitish lateral stripe. Body pale green, becoming 

 just before pupation in one of the sexes more or less reddish brown, dotted with obscure granulations; 

 lateral stripes pale greenish, with whitish granulations and two thoracic dorsal white granulated lines ; 

 caudal horn greenish ; stigmatae black encircled with yellow and divided by a yellow line. Feet reddish 

 or tipped with reddish. Length about 3 inches. 



Pupation. — The larval transformation is subterranean. Pupa dark brown, smooth cylindrico-conical, 



