OF NORTH AMERICA. 225 



Expanse of wings, 5 1.40, ? 1.20 inches; kfiglh of body, ^ 0.60 

 inch. 



Habitat. — Colorado Territory, Ridings and Mead. (Coll. Ent. Soc. 

 Phil.; Mead, Edwards, Stretch). 



For my specimen of this species I am indebted to the kindness of 

 T. L. Mead, Esq., of New York. It is a 5 and differs chiefly from 

 the above description of the ? in the ground cclor of the hind wings 

 being paler, inclining more to reddish than to yellowish. 



15.— ARCTIA ARGE. (Pi. 9, fig. 11 ^ , 10 $ ). 



Bombyx arge, Drury, 111. Nat. Hist. I. p. 35, pi. 18, fig. 2. (1770.) 

 Phaloena dione, S. Abb., Lep. Ins. Ga. p. 125, pi. 63. (1797.) 

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

 Arctia arge, Harris, Ins. Inj. Veg., p. 244. (1841.) 

 Arctia dione, Walker, Cat, Lep. B. M. Ill,, p. 605. (1855.) 

 Arctia arge, Duncan, Nat. Lib. vol. 36, pi. 19. (1858.) 

 Arctia arge, Clemens, Proc. Acad. Nat. Sci. Phil. p. 528. (i860.) 

 Arctia dione, Morris, Syn. Lep. N, Am. Supp. p. 340, (1862.) 

 Arctia arge, Harris, Ins. Inj. Veg., 3rd ed., p. 346. (1862.) 

 Arctia dione, Saund. Syn. Cau. Arct. p. 7. (1863.) 

 5. — White to flesh color, with black markings. The following 

 description is drawn from a flesh colored specimen with the black 

 markings all present. 



Head pale creamy pink. Palpi black above, red beneath ; side of 

 front black. Antennae wtiitish on basal half, remainder black ; pecti- 

 nations brownish. All the thoracic parts pale creamy pink. Each 

 lobe of prothorax, each patagia, and thorax with a central black stripe. 

 Thorax beneath blackish at base of wings. Abdomen pale flesh color 

 above, with dorsal and lateral macular stripes, the spots in the latter 

 small ; beneath black, with the edges of the segments flesh color. 

 Legs ; anterior and middle pair with red femora, tibiae whitish out- 

 wardly ; posterior pair whitish, femora and tibiae striped with black, 

 tarsi mostly dusky. 



Anterior wings creamy pink, fringes concolorous. Costa near apex 

 tinged with vermillion. Marked as follows with black. Two long spots 

 in discal area ; one on discal vein ; a narrow stripe below the origin of 

 the 4th median vein ; a triangular spot below median vein outside ori 



