Sphingidae 
Genus DEIDAMIA Clemens 
The head is small, narrow, retracted, crested. The eyes are 
small. The antennae are fusiform, with the tip bent back slightly, 
scarcely hooked. The thorax is stout, somewhat crested. The 
abdomen is conic, and in the male has a small anal tuft. The 
fore wings, which have twelve veins, are narrow, with the inner 
margin sinuate. The apex of the fore wings is truncated, and 
the outer margin is deeply excavated .opposite the end of the cell 
and also just above the inner angle, which is distinctly produced. 
The hind wings are slightly crenulate on the outer margin. 
There is only one species belonging to the genus. 
(i) Deidamia inscriptum Harris, Plate II, Fig. 15, $. 
(The Lettered Sphinx.) 
The caterpillar feeds upon the wild grape-vine. The moth 
appears in the early spring. It is a common species in western 
Pennsylvania, but seems elsewhere to be regarded as quite rare. 
It ranges from Canada to Virginia and westward to the 
Mississippi. 
Genus ARCTONOTUS Boisduval 
This small genus, in which there are reputed to be two 
species, is .very closely related to the genus Proserpinus, from 
which, as has been pointed out by Rothschild & Jordan, it 
differs in appearance “owing to the more woolly scaling.'’ 
The chief structural difference is found in the fact that the 
antenna is not clubbed but fusiform, gradually curved, and 
the feet are without a pulvillus, and have only vestiges of the 
paronychium. 
(1) Arctonotus lucidus Boisduval, Plate III, Fig. 14, $. 
(The Bear Sphinx.) 
This insect, which hitherto has been rare in collections, 
appears to have a wide range along the Pacific coast, from 
southern California to British Columbia. It appears upon the 
wing very early in the spring of the year. 
The name Arctonotus terlooi is applied to a species, reported 
from northern Mexico by Henry Edwards, and described by him, 
in which the hind wings are wholly vinous red, and the green 
basal band of the fore wings is wanting. 
7i 
