504 PAPILIONID.^. 
Parnassius przewahkii, an allied species, has been described by Alpheraky 
from the Bourkhane-Bouddha mountains, Thibet (Eom. sur Lep. iii. p. 40o, 
1887). 
Parnassius delphius. (Plate XXXIII. fig. 4, var. 6 .) 
Doritis delphius, Eversmann, Bull. Mosc. 1843, p. 541, pi. vii. figs. 1 a, b ; Herr.-Scluift'. 
Schmett. Eur. i. figs. 638, 639 (1852). 
Parnassius delphius, Lang, Butt. Eur. p. 24 (1884). 
Parnassius delphius, var. elwesi, 'Entomologist,^ xxvi., Suppl. p. 104 (1893). 
"Expands 2-] 2 inches. Whiter than artius. The fore wings have three black streaks in the 
discoidal cell. Two more external to this reaching from the costa ; below the exterior one is 
a row of four black spots ; the apex is dusky. Hind wings with two very small red spots ; 
a row of black spots runs parallel to the hind margin. On the underside there is a very 
faint red spot at the inner margin of the hind wings (described from the figure in H.-S.). 
" Habitat. Siberia." (Lang, I. c.) 
Var. elwesi, Leech. (Plate XXXIII. fig. 4, J .) 3Iale. Larger than any of the named forms 
of P. delphius, but in some particulars it resembles var. transiens. It differs, however, from 
that insect, as it also does from any variety of P. delphius that I have seen, in having a red 
spot in the lower portion of the large black bar beyond the discoidal cell of primaries, and 
a patch of black scales between the usual discoidal spots ; there are only the faintest possible 
traces of a black spot above the inner margin. On the secondaries the black basal area is 
deeply indented on its outer edge, and the marginal border is of uniform width throughout. 
Fringe white, chequered on the primaries with black at the ends of the nervules. Under 
surface glassy, with aU the markings of upper surface faintly reproduced. 
Expanse, 80 millim. 
One example from the high plateau to the north of Ta-chien-lu. 
Although I have refeiTed this insect to P. delphius, I recognize the possibility 
of its proving to be a distinct species when a larger number of specimens, 
including the female, are available for examination. 
P. delphius is an exceedingly variable species. Its headquarters appear to 
be the Central-Asian district between Samarkand and Kouldja. It occurs in 
the Hindu-Kush under a form which Grum-Grshimailo has named var. liunza, 
and is found at high altitudes in the N.W. Himalayas and S.E. Thibet, where 
it assumes the form known as var. stoliczanus, Felder. The following forms of 
the species have been described by various writers and most of them are figured 
by Austaut in " Les Parnassiens de la Faune Palearctique," — var. naman- 
ganus, Staudinger ; var. infernalis, Stand. ; var. illusfris, Grum-Grshimailo ; 
var. cardinal, Gr.-Gr. ; var. staudingeri. Bang Haas ; and var. transiens, Staud. 
The habits and variation of the species are discussed at considerable length 
by Grum-Grshimailo in Eom. sur Lep. iv. 
