Sphingid» 



(i) Dictyosoma elsa Strecker, Plate V, Fig. 14, 5 • (The 

 Elsa Sphinx.) 



This peculiarly colored hawkmoth, which may easily be 

 recognized by the figure in our plate, occurs in Arizona. A 

 number of years ago Mr. Jacob Doll reared a large number of 

 specimens from the larvae. Since then but few specimens have 

 been obtained, and it is as yet comparatively rare in collections. 



Genus ATREIDES Holland 



The generic name Atreus proposed by Grote and adopted on 

 structural grounds by Rothschild & Jordan for this genus, 

 having been preoccupied by Koch in the Arachnida, I have 

 given the name Atreides to the genus, which contains the single 

 species named originally Sphinx plebeja by Fabricius. 



(i) Atreides plebeja Fabricius, Plate V, Fig. 6, 5. (The Ple- 

 beian Sphinx ) 



This common species feeds in its larval state upon the 

 trumpet-vine {Tecoma). it ranges from Canada to the Gulf 

 States and westward to the Mississippi, wherever its food- 

 plant is found. It is double-brooded in the Middle States, one 

 brood appearing in June, the second in August. 



Genus HYLOICUS Hubner 



This genus, which includes some thirty species, most of 

 which are found in America, though a few occur in Europe and 

 Asia, is represented in our faunal limits by sixteen species, of 

 which eleven are figured in our plates. It corresponds largely 

 with the genus Sphinx as defined by many recent writers. 



(i) Hyloicus eremitus Hubner, Plate VI, Fig. 6, $ . (The 

 Hermit Sphinx.) 



Syn., sordida Harris. 



This hawkmoth, which is double-brooded, lives in the larval 

 stage on spearmint {Mentha) and wild bergamot {Monarda). It 

 ranges from New England southward to Georgia, and westward 

 into the Mississippi Valley. It is not uncommon in western 

 Pennsylvania, where it is double-brooded. 



(2) Hyloicus eremitoides Strecker. (The Hermit-like 

 Sphinx.) 



Syn., lugens Grote {non Walker). 



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