Catalogue of North American Sphinges. 317 
-Ireceived this species from Dr. A. G. Emler, of Savannah, 
Georgia, and have adopted the specific name that he gave to it, 
and from which it is to be presumed that the larva lives upon the 
Ipomea. The Melanthus and Nycteus of Cramer resemble it 
somewhat, and are probably congenerical with it. 
Subgenus Cosmosoma. Hubner. 
Antenne long, very much attenuated at the end, and with a double row of very 
Short pectinations beneath. ‘Tongue moderate, spirally rolled. Palpi long, curved 
upwards, and extending beyond the clypeus; the joints cylindrical, covered with 
small scales, a little hairy at base, and obtuse at tip. Wings elongated, hind pair 
rather small, and with the discoidal cell and nervures as in Syntomeida, Body 
cylindrical, rounded and not tufted behind, and with a small tubercle on each side 
of the first abdominal segment, Spurs of the hindmost tibie four and of moderate 
size. 
2. G.(C.) Omphale. Hubner (according to Say). = Aige- 
ria Omphale. Say. 
Scarlet ; wings transparent, veined and bordered with black, 
the first pair with a small black subcostal spot, and the black bor- 
der very much widened at tip; head azure-blue ; antenne black, 
With the tips white ; two terminal joints of the palpi, and a line 
on each shoulder-cover black; four azure-blue dots in a transverse 
tow on the fore-part of the thorax; last four segments of the ab- 
domen black, with four azure-blue spots on each side, and a dor- 
sal black line extending from the middle of the second segment 
including in it seven azure-blue spots; belly and outside of the 
Second pair of tibie black. Expands one inch and a half or more. 
Tnhabits Florida. 
For a specimen of this beautiful insect I am indebted to Mr. 
Doubleday. It cannot belong to the genus Algeria, to which it 
Was referred by Mr. Say, in his American Entomology, where it 
is figured. As Hiibner’s works are not accessible to me, I have 
drawn up the characters of the subgenus Cosmosoma from the 
Specimen of the Omphale in my possession. Zygena Androm- 
acha of Fabricius and the Caunus of Cramer probably belong to 
the same subgenus. 
Subgenus Lycomorpha. H. 
Antenne rather short, curved, toothed or with very short pectinations on each 
Side, which give to the joints, when seen from beneath, a cordate or bilobed appear- 
ance. Tongue about half as long as the body, spirally rolled. Palpi short, hardly 
€xtending beyond the clypeus, nearly horizontal and but slightly curved at base 
and covered with large and rather loose scales. Wings not elongated, rounded at 
tip; discoidal cell of the hind pair long, extending nearly to the hind-margin, and 
