Sphingidse 

 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 11, 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 

 ditTers 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. 



(i) Arctonotus lucidus Boisduval, Plate III, Fig. 14, S . 

 (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. 



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