PAMl'llILlDI: EKYXXIS SASSACUS. 



1643 



the wing is delicately edged witli blackisli and tlie fringe is mucli as al)ove. Uind 

 xointjs with an extra-mosial, bent band, composed of (l\'e nearly eciual, si|uarlsh, usually 

 obscure, pale straw-colored spots, extending from the middle of the outer half of the 

 costal nervure to the middle of the lower median nervule. bent in the interspace beyond 

 the cell at rather less than at right angle; on the lower half of the tip of the cell, and 

 at the extreme base of the costo-subco.stal interspace are other similar pale spots, still 

 more obscure than they, and often obsolete; occasionally the former and the extra- 

 mesial spots commingle into a common central area, giving the whole wing quite a dif- 

 ferent appearance ; occasionally, too, a few scattered griseous scales collect along the 

 outer limit of the extra-mesial series of spots; the wing is usually duskier in a longi- 

 tudinal streak, the upper limit of which follows the median nervure and the middle 

 median nervule, but whicli does not alt'ect the spots ; the outer border is delicately edged 

 with blackish aud dotted with l)lack at the nervule tips. Fringe pale bull', palest below, 

 more or less infuscated slightly in the $. 



Abdomen blackish above, the base covered with long, greenish tawny hairs, the 

 sides with scattered but abundant tawny scales, below pale yellowish. Upper organ of 

 male appendages (37 : 14, 20) strongly arched, very deeply sulcate above posteriorly; 

 hook two-thirds the length of the centrum, nearly straight, equal and very slender as 

 viewed above, tapering delicately as seenfrom theside, the apical half compressed, lami- 

 nate; lateral arms similarly compressed, but tapering only at the tip, longer than the 

 hook, widely separated from it at their base, curving upward. Clasps nearly twice as 

 long as broad, not extending nearly so far backward as the upperorg.an, the upper edge 

 broadly angled near the base, its apical half a little incurved, the sharply poiuted apical 

 denticle a little incurved, and separated widely by a deep rounded excision from a much 

 larger, but equally pointed, upturned and slightly recurved tooth at the extremity of the 

 upper margin of the clasp; the recurved edge of the lower margin forms a uniformly 

 serrated lamina supporting the inner anterior edge of the apical tooth, aud terminates 

 anteriorly in a pointed upturned tooth opposite, and similar to, the preapical tooth 

 of the upper edge of the clasp. 



Described from 32iJ , 179 . 



Accessory sexual peculiarities. The discal stigma of the male h.as been de- 

 scribed under the wings ; the scales contained in it consist of jointed threads, the joints 

 distinctly fusiform (46 :1a), accompanied by large, quadrangular, equal scales, two or 

 three times longer than broad (1 c) ; the stigma is guarded at the edges by long and 

 slender scales, gradually enlarging from base to apex, the latter truncate with undulate 

 margin (1 b, d) ; the cover scales (1 e) large, triangular, well-rounded and elongated. 



This familiar species is readily distinguished from the others; the wings are broadly 

 and distinctly bordered above with dark brown, which does not gradually merge into 

 the orange-tawny base ; and both sexes have a distinct longitudinal dash of dark brown 

 in the basal half of the interspaces beyond the cell, much more distinct than in the 

 other species ; the under surface of the hind wing ditt'crs from most of the other species 

 in the faiutness of the mesial band. 



Egg (66 : 19, 23). Surface of cells profusely sprinkled with white circular dots, ap- 

 parently punctuations, averaging forty to fifty to a cell; they are present, also, in the 

 cells of the micropyle, but toward the very summit become elongated; average cells, 

 .04 ram. In width. Micropyle (69:12), .38 mm. in diameter; central cells, .01 by .025 

 mm. in size; those neighboring, .01!) by .042 mm. in size; the outer ones, .038 by .05 

 mm. Color verj' pale greenish, almost chalk white at first, a little glistening, but after- 

 wards becoming slightly discolored with dirty yellow. Height, .76 mm. ; width, 



