OF NORTH AMERICA. 185 



BOMBYCIDai. 

 ARCTIIN^E. 

 Genus EUCHSITES. Harris. 



" Fore wings rather broad, trigonate. The subcostal vein gives rise 

 to fwo marginal nervules from the posterior part of the disc, and be- 

 tween the second marginal nervule and the apical is formed a short 

 costal cell. The post apical nervule arises midway between the costal 

 cell and apical nervulet. The discal vein is angulated and the sub- 

 costo inferior are given off from a common point. The median vein 

 is four-branched, the posterior nervule moderately remote from the 

 penultimate. Hind wings as broad as the fore wings, with the neura- 

 tion common to the family." 



" Head moderate, depressed ; with ocelli. Face inclined. Eyes 

 small. Antennae slightly pectinated in 3 , serrated in ? . Labial palpi 

 rather stout and ascending on the face nearly to base of the antennae ; 

 basal and middle joints nearly equal ; terminal short, three or four 

 times less long than the middle joint. Tongue rather longer than the 

 anterior coxae." 



' ' Body short or moderate. Thorax rather woolly; abdomen smooth. 

 Legs with hairy femora ; anterior tibiae nearly as long as the anterior 

 tarsi ; internal spur concealed and half as long as the tibiae ; hind tibiae 

 with two pairs of spurs." 



Clemens, Proc. Acad. Nat. Sci. Phil. p. 532 (i860). 



The five species found in the United States may be tabulated thus : 



Abdomen yellow. 



Wings stone color. ----- jE*. egle. 

 Wings dirty white. - - - - - E. oregonensis. 

 Wings milk white. - - - - - E. collaris. 

 Abdomen rose color. 



Wings pure white. E. elegans. 



Wings blueish cinereous, costa yellow. - E. egleftensis. 



1.— EUCH.ffi;TES EGLE. (Pi. 8, fig. 4 $ .) 



Bombyx egle, Drury, 111. Nat. Hist. H., p. 36. pi. 20, fig. 3- (1773.) 

 Spilosoma egle, Westwood, Ed. Drury (1837.) 



