PAMPHILUH: ATRYTONE ZABULON. 



1619 



miihvay botwecn its basal beiul and the tip of tlie costal nervure ; in tlic basal two- 

 thirds of that portion of the subcosto-median interspace whicli is occupied by the 

 band, it is often fleclied with tawny and its interior margin is generally obscured on the 

 upper half of the wing by a mottling of yellowish and brownish, indicated in some 

 specimens by only a small, round, yellowish spot in the centre of the brown basal 

 portion of the coslo-suljcostal interspace; the costal margin is often narrowly and 

 distantly llecked with hoary, and tlie inner border is broadly and rather feebly flecked 

 with yellowish hoary. Fringe very dull, brownish, honey yellow, brightest apically, 

 with a faint, dusky, median belt. 



Abdomen above blackish, profusely covered with tawny and olivaceo-tawny hairs ; 

 beneath dark brown, mostly obscured by abundant gray and pale brown, elongated 

 scales. Upper organ of male appendages (37 : 17, 18) very strongly arched, the heaviest 

 part beyond the middle, where it is bulbous, tapering regularly and surmounted in 

 the middle by a tapering, slightly curving tuft of reversed bristles. Hooks clearly dis- 

 tinct, but attingent, short, straight, needle-like, as long as half the extreme breadth of 

 the centrum, scared}' incurved at the tip ; lateral arms inconspicuous, aculiform, lying 

 beneath the hooks. Clasps a little less than twice as long as broad, the upper angle 

 produced slightly so as to be a little less than a right angle, and covering the lower 

 appendage, which turns upward so abruptly that its lower edge forms the posterior, 

 rounded border of the clasp which is turned back inwardly, and bears a sharp, triangu- 

 lar, upturned tooth, smaller and sharper than, but otherwise similar to, that which 

 terminates the process, just above the upper edge of the clasp. 



Described from 120 specimens, of which 74 3 , 34 9 . 



Dimorphic form. The dark female, Atrytone zabulon pocahontas (10:9), was 

 first described as a distinct species. It may be distinguished as follows : — 



Head covered with almost equally mingled black and dark tawny hairs ; eye narrow- 

 ly encircled behind with white scales, which become yellowish above and are inter- 

 rupted with blackish brown ones beneath; palpi as viewed from above resembling the 

 top of the head, the last joint covered with black hairs; beneath, the palpi have a 

 hoary appearance, being made up of white scales, mingled more and more toward the 

 tip with tawny and black scales and furnished scantily throughout with long black 

 hairs. Antennae as in the normal type, excepting that the paler colors of the stem 

 are replaced with white, which also interrupts the black slightly just before the club. 



Thorax covered with black scales and long dark glaucous hairs, the wing covers and 

 prothorax with intermingled black and dark tawny hairs; beneath with mingled 

 brownish tawny, grayish and dull tawny hairs. Femora covered with dark silvery 

 scales, blackish brown on the under and inner surface, fringed with silvery gray and 

 blackish hairs; tibiae and tarsi dull white, excepting above, where they are brown, 

 mingled with fulvous, the hind tarsi wholly dirty white ; appendages as in the normal 

 form, excepting that the spurs are dirty white, luteous tipped. 



Wings above, dark chocolate brown ; fora wings with a transverse series of four 

 longitudinal, white, occasionally more or less deeply tawny spots at the base of the 

 upper subcostal interspaces, the uppermost much smaller than the others, often re- 

 duced to a mere dot or obsolete altogether, lying just within the others, which are 

 equal, arranged in a series at right angles to the costal margin; below them a slightly 

 curving row of four similarly colored spots, the lower two sometimes dulled, lying 

 nearly in a line connecting the apex of the wing with the middle of the inner margin, 

 the lower two occupying the median interspaces much larger than the others, sub- 

 quadrate, the lower the larger, the upper two in the interspaces above square and 



