216 



STUDIES IN THE GENUS THANAOS 



The type, including the genitalia mount, is in the collection of 

 the Academy of Natural Sciences of Philadelphia. 



Thanaos scudderi new species. 



Thanaos tatius Edwards, Papilio, ii, 179, 1882. 

 Edwards, Papilio, iii, 65, 1883. 



MaZe.— Expands 1.6 inch. "Upper side of primaries umber-brown, 

 blackish on disk and to base, the outer limb free from white scales; on outer 

 edge of disk towards costa a light brown patch; on costa four sub-apical 

 silvery dots, in a zigzag line; one such dot in upper median interspace, and 

 one, rather obscure, against end of cell; along hind margin a row of small 

 patches of bluish-white scales; the usual (in this genus) extra-discal band is 

 made up of large lanceolate and elongated black spots, separated, each 

 edged on the outer sides by bluish-white scales, which scales form a conspic- 

 uous serrated line across the wing. 



Secondaries black-brown with an indistinct series of lighter patches 

 beyond the disk; fringes of primaries concolored; of secondaries white, 

 cinereous at outer angle. 



Under side of primaries lighter, the spots repeated, the one against cell 

 distinct ; along hind margin a row of white points, and at inner angle a white 

 patch; beyond the disk an indistinct series of whitish patches, almost obso- 

 lete in the middle of the wing; the apical area dusted white. Secondaries 

 uniform blackish-brown; along the edge of hind margin a macular white band 

 represented by dots on the upper half. 



Body above dark brown, beneath same, but the thorax with many grey 

 hairs; legs dark brown with dull white hairs interspersed; antennae black, 

 on the underside ringed white; bulb black above, under side and tip ferru- 

 ginous. From a single male. This fine species is readily distinguished from 

 any of the white-fringed allies by the pure brown color of the marginal area 

 of primaries, with no dusting of white, and by the conspicuous extra-discal 

 band and its whitish serrated edging." (Orignal description.) 



