Catalogue of North American Sphinges. 301 
of the species, to wit, porcellus, the pig, and Elpenor, the name 
of one of the companions of Ulysses, who was changed to a hog 
by Circe. In the year 1836, Mr. Duncan,* probably not aware of 
the previous establishment of this genus, pointed out its charac- 
ters under the name of Metopsilus, derived from jétwaor, the 
Jront, and yo, slender, in allusion to the form of this part of the 
larva. These naturalists, in separating this new group from the 
genus Sphinx, or rather from Deilephila, seem to have had only 
European insects under consideration ; but in America there are 
several species, which, so far as similarity of form and habits, in 
all their States, indicates a natural affinity, ought certainly to be — 
included in the same generical group, from which, however, they 
will be excluded unless the characters of the genus are somewhat 
modified to receive them. Believing the genus to be a good one, 
and susceptible of modification, I have changed the characters of 
tin the synopsis prefixed to this catalogue, so as to admit our 
American species. In C. Pampinatrix, Cherilus, and versicolor, 
the antenna are rather short and slender, arcuated, and end ina 
very long slender hook ; the fore-wings have the outer and inner 
Margins sinuous, so as to exhibit prominent outer and hinder an- 
gles ; the hind-wings have a sinuous hind-margin, and a promi- 
Nent angle near the tail; and the abdomen is rather short, 
*onical at tip. The darve of the first two of these species have 
the eleventh segment conically prolonged above, forming a base 
a very short slightly curved caudal horn, and the sides of the 
body are marked with oblique bands sloping upwards and back- 
Wards. They transform above ground, under fallen leaves, or 
slightly covered with grains of earth, connected by a few threads, 
80 as to form a loose imperfect cocoon. The pupa is short, thick, 
obtusely rounded before, with the tongue-case imbedded, indis- 
tinct, and nearly as long as the wing-cases; the tail is rather 
blunt, and ends in a long, slender point, which, under a mag- 
hifier, is found to be rough, and notched at the tip. 
4+ C. Pampinatriz. Smith—Abbot. 
Light olive-gray above, shaded with olive ; fore-wings with a 
dot near the middle, a transverse band near the base, a broader 
nd beyond the middle and a large triangular spot adjacent to 
“ach acute angle and almost forming a third band, of an olive 
Color ; hind-wings rust-colored, dusky behind, and gray next the 
elcap ee 
. Jardine’s Naturalist’s Library. Entomology. Vol. iv, p. 154. (1836.) 
