﻿NORTH AMERICAN SPHINGIDjE. 153 



the middle of the nervules, a few spots on the inner margin, and a marginal black line (bordered above in 

 Cramer's figure with blue.) Posterior wings luteous or pale orange, with three angulated brownish lines 

 and brownish terminal margin. 



Geographical distribution. — South America, West Indies. 



41. A. G-anascus. — Sphinx Ganascus Stoll, Cramer, V. 157, pi. 35, f. 3. Amblypterus Ganascus 

 Hitbner, Verz. Schmett. 133, 1429. Ambulyx Ganascus, Walker, p. 121. 



Fawn-color ; head with a band between the antennae, the tegnlae and a band at the base of the 

 abdomen dark greenish brown. The antennsB white. Abdomen fawn-color, with brown or ferruginous 

 dorsal spots. Anterior wings brown, with a glaucous hue ; a rectangular spot on the base of the inner 

 margin dark greenish brown, edged with testaceous ; a small round one at the base, two in the disc, 

 another near the tip on costa, one in medio-posterior interspace and a small one above the interior angle 

 of the same hue and edged with greenish. Posterior roseate, with three angulated blackish brown bands 

 sometimes dilated and somewhat connected. 



Geographical distribution. — South America, Mexico, West Indies. 



PHILAMPELUS Harris. 



The body is large and thick. The head rather large, free and prominent, with the 

 front long, smooth, conical and rather broad ; the eyes large or moderate ; the palpi 

 ascending and pressed closely to the front ; the tongue as long as the body ; the an- 

 tennas long, exceeding the'thorax, slender and tapering at the extremity into an ample 

 hook with seta. The thorax is thick, moderately advanced in front of the base of 

 anterior wings and rounded. The abdomen large, thick, cylindrico-conical and acute 

 at the tip, more than twice the length of the thorax. The wings are moderately 

 long ; the length of the anterior somewhat more than that of the body, and about 

 twice and a half longer than broad across the inner angle ; the hind border entire, 

 slightly excavated from the tip to medio-superior vein, and thence convex to interior 

 angle, or very oblique and almost straight, with 'the inner margin deeply concave. 

 The posterior are somewhat acuminated at the tips and the hind margin slightly 

 excavated before the inner angle. The legs are long but strong, and the hind tibiae 

 with two short and two long spurs. Male. — Antennae ciliferous. Female. — Antennoa 

 simple. 



Larva. — The head is small and globose, and the segments of the body anterior to 

 the fourth much attenuated to the head ; these and the head are capable of being- 

 retracted within the fourth, which is much swollen. Instead of a caudal horn on the 

 eleventh segment there is a shining lenticular tubercle, and the body at this part 

 is rounded, and descends very abruptly to the anal shield. It is ornamented with 

 irregularly oval, stigmatal patches and a faint subdorsal line. 



In repose, or when disturbed, the anterior rings are retracted within the fourth, 

 causing it to appear truncated and bulbous anteriorly, and at the same time the body 

 is thrown into a sphinx-like posture. The larval transformation is subterranean. 



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