AMERICAN LEPIDOPTERA. 15 



and aL do mi I ml ruargiu slightly silvered. Body above fulvous, be- 

 neath buflF; legs buff ; palpi buff, ferruginous above and at tip; an- 

 tennae brown above, fulvous and grey beneath ; club black tipped 

 with ferruginous. 



Female. Expands 2.8 inches. Color a shade paler; the marginal 

 lines diffuse, on primaries forming a broad black band showing traces 

 of fulvous spots only next inner angle; the spots within apical lunules 

 whitish ; secondaries present a row of spots, a shade paler than the 

 former, corresponding to the second silvered row of under side. 



Under side of primaries yellow buff, deep fulvous at base and on 

 inner margin, covering three fourths of all, passing into reddish buff 

 towards inner angle; submarginal spots as in male, but less distinct, 

 and enclosing, throughout, silver spaces; subapical silver spots as in 

 male. 



Secondaries buff, a shade less yellow than primaries, mottled with 

 darker buff; spots, as in male, very large, the second row completely 

 but delicately edged with black. 



From 1 S , 1 9 , in the collection of Henry Edwards, Esq., San Fran- 

 cisco. Taken in the valleys of the Sierra, near A'irgiuia City, in 

 1869. 



This distinct species in the markings of upper side and in the form 

 and size of silver spots is nearest Ualcyone^ but is much smaller, the 

 margin of primaries convex, of a jxile color above, and quite different 

 beneath. 



Grapta Silenus, n. sp. 



Male. Expands 2.2 inches. Upper side dull yellow fulvous, clouded 

 by brown, and spotted with black as in the allied species ; the spots on 

 inner margin of primaries and the costal patch large, diffuse ; a large 

 patch on disk of secondaries; a second, smaller, at origin of median 

 nervules ; submarginal lunules on both wings conspicuous, yellowish ; 

 fringes fuscous. 



Under side grey brown covered with black streaks, densely and al- 

 most wholly on basal third, nearly as much on the margins, leaving but 

 a narrow lighter space on the disks; silver mark short, thick, attenua- 

 ted at extremities, bent at right angles. 



From 1 % taken in Oregon ; received from Henry Edwards, Esq. 



This species belongs to the same group with Prognc, Grncilis and 

 Zephyrus ; is larger than either, duller colored, heavily spotted with 

 black, beneath nearly black. 



