Catalogue of North American Sphinges. 315 
Family V. ZYGENIADE. H. The Zygenians. 
“yzenide. Stephens. Zygénides. Boisd. 
Hitherto I have not met with any insects in the United States 
belonging to this family ; but Dr. Hornbeck has‘sent to me, from 
St. Thomas, a species which not only seems to be undescribed, 
but must constitute a new genus, the characters of which are 
given in the Synopsis, and those of the species in the note below.* 
Family VI. GLAUCOPIDIDE. H. The Glaucopidians. 
Procrides and Zygénides. Boisd. Zyganiade. H. Cat. Cte- 
nuchide. Kirby. Callimorphe. Westwood. 
Genus XV. Procris., F. 
Ino. Leach. 
P. Americana. = Aglaope Americana? Boisd. = dispar. 
H. (Cat. ) 
Blue-black ; with a saffron-colored collar, and a fan-shaped, 
somewhat bilobed, black caudal tuft. Expands from ten lines to 
Me inch. Larva, according to Prof. Hentz, hairy, green, with 
black bands. It is gregarious, aud devours the leaves of the 
stape-vine, and undergoes its transformations in an oblong-oval, 
tough, whitish cocoon, which is fastened to a leaf. 
£ Spree mene se 
* Genus XIV. Masricocera. H. 
t has an entirely different form from that of the 
type of the genus. These characters are so very striking, that I have ventured to 
A ae this new genus, although the transformations of the species are unknown 
ome. 
M. wespina. 1 
Light Tust-brown ; wings immaculate; collar, first abdominal. segments above, 
third below, and a triangular spot on each side, white; head, thickened part of 
the antennae edge of the thorax behind the collar, and a large triangular spot on 
, 
tach side of the second abdominal segment, black; breast black, spotted with 
W, f. 
The Zygena Ewnolphus of Fabricius, and the Pretus of Cramer are probably 
°ongenerical and closely allied to this species. 
