AMERICAN LEPIDOPTERA. 13 



margin, fading into yellow beyond middle of disk; marginal border 

 narrow, nearly straight within, curving slightly at apex and expanded 

 on costa to double the greatest width elsewhere; crossed at apex by 

 yel'ow nervules; diseal spot large, subovate, orange, covered with 

 bl lek scab's, showing an orange border and points of same color be- 

 tween the scales. 



Secondaries have a border of same width as primaries, extending but 

 little beyond second branch of median ; discal spot unusually large, 

 rounded, deep orange, without a ring; fringes of both wings deep ro- 

 seate, at inner angle of primaries and outer angle of secondaries giving 

 place to yellow; costal eJge of primaries roseate, and slioulders conspi- 

 cuously so. 



Under side of primaries paler, deepest next base ; costal margin to 

 apex widely sprinkled with black scales; discal spot enclosing a large, 

 yellow white spot; a submarginal row of small brown spots or points, 

 curving around the apex, with two points on costa. Secondaries much 

 obscured ; discal spot duplex, a large silver spot and a point, each sur- 

 rounded by a broad dull pink ring ; on the middle of the larger ring 

 are silvery scales ; a submarginal row of pinkish spots ; a patch of same 

 color on costa and another at base of median. 



Body black covered with greyish hairs; on thorax with roseate; 

 beneath, thorax yellow with some roseate hairs; legs pale rose; palpi 

 yellow tipped with rose; antennrc roseate, club brown. 



Fcnidle. Expands 2 inches. Similar to male, a little more greenish ; 

 discal spot of jirimaries orange with an irregular black ring within or 

 upon the orange ; marginal border less dense than in male, confined to 

 edge of wing, preceded on costa by a few patches of black scales; bor- 

 der of secondaries restricted to outer angle; discal spot, as in male; 

 beneath as in male. 



1 S . 1 9 ; fi'oni the collection of Dr. II. Behr, and taken at Moke- 

 luma inils, California. 



A well marked and distinct species. 



PlERIS ViRGINIENSIS, n. sp. 



Size of Oleracea ; wings longer, narrower, more delicate, of a less 

 pure white. 



Male. Expands 1.5 to 1.7 inch. Upper side white, more or less ob- 

 scured by grey or smoky brown ; bases of wings, costa and apex of pri- 

 maries greyish ; a grey patch on costa of sec(mdaries ; the obscure por- 

 tion mostly confined to basal half and inner margin of primaries, and 



