128 PAPILIONIDJ3. 



discal and postdiscal, complete bands that extend from the costa 

 to the dorsum ; the discal band very broad, below the apex of cell 

 bent inwards and almost completely filling the base of interspaces 

 2 and 3 ; the terminal margin broadly dusky hyaline black. Hind 

 wing : the dorsal margin up to the subcostal vein and downwards 

 to a little above the tornus densely irrorated with black scales and 

 with scattered long white hairs ; an upper basal black-encircled 

 crimson spot ; another in the middle of interspace 7 and a third in 

 interspace 5, the latter two centred with white ; beyond there is 

 an irregular, sinuous, postdiscal dusky -black transverse band from 

 costa to vein 4, posterior to which in interspaces 2 and 3 are two 

 prominent round black stibtornal spots, broadly centred with blue; 

 lastly, the terminal margin narrowly dusky black. Cilia of both 

 fore and hind wings prominently yellowish white. Underside 

 similar ; glassy markings similar, but mostly seen by transparency 

 from above: faint indications of an additional crimson spot at 

 base of cell and base of interspace 1. Antennae brownish black, 

 obscurely annulated with brown ; head, thorax and abdomen 

 black, the latter two studded with long white hairs. 



Exp. <$ $ 79-84 mm. (3-1-3-35"). 



Hah. Eastern Himalayas, on the boundary between Sikhim and 

 Tibet, at altitudes between 15,000 and 16,000 feet. 



This smaller and darker fovm of P. imperator, Oberthiir, from 

 Eastern Tibet, just enters into our limits. 



567. Parnassius acco, Gray, Cat. Lep. Brit. Mus., Pap. 1852, p. 76, 

 pi. xii, figs, 5, 6, $ ; Bates, in Henderson 8f Hume's 'Lahore to 

 Yarkand,' 1873, p. 305, fig. ; Ehces, P. Z. S. 1886, p. 35 ; Moore 

 (Tadumia). Lap. Ind. v, 1901-1903, p. 116, pi. 411, figs. 1, 1 a-1 c, 

 <J$. 



c? $ Upperside: dull greyish white. Fore wing: costal margin 

 and base with an irroration of black scales, the white scaling 

 clearest and most dense in the cell, this last crossed by a medial 

 and an apical short, broad, transverse jet-black band ; beyond 

 apex of cell an irregularly sinuous dusky-black discal band that 

 usually extends from costa to vein 3, but in some specimens right 

 up to the dorsal margin, in most it bears an anterior crimson 

 spot ; this is followed by less irregular and, in most specimens, 

 slightly broader postdiscal and terminal similar transverse bands 

 and a pre-ciliary slender continuous line on termen and dorsum. 

 Hind wing : dorsal half of the wing dusky black, the outer or 

 upper margin of this colour, irregularly indented ; a discal, a sub- 

 costal and a basal black-encircled spot that varies in colour from 

 crimson to pinkish yellow, followed by a subterminal series of 

 black lunular spots and a narrow terminal band, crossed and inter- 

 rupted by the white veining. Cilia of both wings conspicuously 

 white. Underside with a glassy appearance. Fore \ving nearly 

 as on the upperside, but the black markings, except the two 

 bars across the cell, only seen through by transparency from the 



