498 PAPiLioxiD.i:.^ 
lost, and the description of this sex given by Boisduval does not agree with 
what is now known to be the true female of the male to which Boisduval's 
description applies. Mr. Elwes, in his paper " On the Genus Parnassms " *, 
suggests that the name jacquemonfi should apply to the female which Bois- 
duval described, because its identity appears to him to be more certainly fixed 
than is that of the male insect. I quite agree, however, with M. Oberthiir 
that Boisduval's name should apply to the male which we know, and not to the 
female of which we have no knowledge. In the description of the supposed 
female of his jacquemoriti Boisduval says " La poche de I'extremite de 
I'abdomen assez developpee, plissee en travers et sans carene longitudinale," 
whereas the true female of Boisduval's jacquemonti has a pouch with a well- 
formed keel. 
Var. Imnalai/ensis occurs in Chamba, Spiti, Lahoul, and Upper Gurwhal, 
It seems to be very local, but common where it occurs. The type was from 
Lahoul, from whence I have also received specimens, as well as from Kokser 
and the Dugi Pass. The examples from the latter locality are very dark and 
approach the var. tibefanus. 
P. epaphus also occurs on the Dugi Pass, but at higher elevations than 
P. jacquemonti. 
Actius and other forms of P. jacquemonti have been described as distinct 
species, but as these do not belong to the region under consideration it is 
unnecessary to discuss them here. 
Listrihution. Central Asia, N.W. Himalayas, Western China. 
Parnassius nomion. 
Paniassius nomion, Fischer, Eiit. Russ. ii. p. 242, pi. vi. figs. 3, 4 (1823) ; Boisduval, 
Sp. Gen. i. p. 397, pi. vi. fig. 1 (1836) ; Lang, Butt. Eur. p. 22 (1884). 
Parnassius davidis, Oberthiir, Etud. d'Eutom. iv. pp. 23, 108, pi. ii. fig. 2 (1879), xiv. 
p. 2, pi. i. figs. 3, 3 a (1891). 
Parnassius nomion, var. mandschurice, Oberthiir, Etud. d'Entom. xiv. p. 2, pi. ii. fig. 10 
(1891). 
" Expands 3 in. Very close to P. apollo, but the hind wings have a red spot at the base, and the 
inner margins are more strongly black ; all the wings have a hind marginal border of square 
black and white spots. Time of appearance, July (Boisd.). Habitat, Siberia." {Lang, I. c.) 
Var. da^vidis, Oberthiir. " Eessemble beaucoup a nomion; mais bien plus obscur, et ayant la 
bande subraarginale blanche des superieures plus pres du bord extcrieur que dans nomion. 
* Proc. Zool. Soc. Lond. 1886, p. 36. 
