Catalogue of North American Sphinges. 307 
the middle, and a large triangular brown patch near the tip; hind- 
wings with two or three obscure transverse brown lines; male 
with a triple-tufted tail. Expands two and a half to three 
inches. Inhabits the Southern States. Larva pale green, with 
three darker longitudinal dorsal lines, nine oblique yellowish 
bands on each side, and a long, slender, nearly straight caudal 
horn. Mr. Abbot, from whose figure (Ins. Geog. p. 59, pl. 30) 
this description of the larva is taken, says that it feeds on Virgin- 
lan creeper, Ampelopsis Hederacea, and that it enters the earth to 
wansform. The pupa is elongated, chestnut-brown, with a short 
anal point. 
My specimen of this insect was presented to me by Dr. J. E. 
Holbrook. It is closel y allied to several South American species, 
figured by Cramer, such as his Fegeus, Gorgon, &c. ; and, in- 
deed, the Fegeus may prove to be identical with it. 
M. Boisduval (Icones Hist. des Lépidoptéres d’Europe nou- 
veaux, Vol. I, p. 15) refers the Gorgon of Cramer [?] to his genus 
Pterogon ; but, in my opinion, the genus T’hyreus of Swainson, 
besides having the priority in point of time, is entitled to rank as 
a distinct genus. Is the European Gorgon of Esper, Hubner, 
and Ochsenheimer, quoted in Mr. Children’s Abstract of the 
Characters of Ochsenheimer’s Genera (Philos. Mag. N. 8. Vol. V, 
p. 37), the same as the Surinam species named Gorgon by Cra- 
Mer? And if not, is M. Boisduval’s citation of Cramer’s name 
Correct ? 
2. T. Abbotii. = Abbottii. Swainson. 
Chocolate-brown ; wings very much indented on the outer 
edge ; first pair with wavy and oblique blackish brown streaks, 
and a black dot near the middle; hind-wings yellow, with a 
broad blackish brown hind-border ; edge of the collar and a trans- 
Verse Stripe across the thorax black ; abdomen banded with black 
at base, tufted at the sides of the hinder segments, and terminated 
by a triple-tufted rust-colored tail. Expands from two and one 
third to nearly three inches. Larva, as figured by Abbot, 
(Swainson’s Zoological Illustrations, Part 1, pl. 60) pea-green, 
With narrow dorsal brown lines, nine lateral oblique yellowish 
bands broadly bordered above with brown, and a long slender 
slightly curved caudal horn. It feeds on the grape-vine. Pupa 
chestnut-brown, with two yellowish abdominal incisures. 
