36 MR. H. J. ELWES ON THE GENUS PARNASSIUS. (Jan. 19, 
from their flattened appearance and age seem to have come from the 
same source. 
I have been able to find out the route which Major Charlton 
followed in Ladak, or Chinese Tartary as it was called in those days, 
and among the few scientific travellers who have been to that remote 
and inhospitable region, none seem to have again found this curious 
little insect. It may, however, be distinguished from P. acco and 
P. sikkimensis by the fringes of the wings, which are black in the fore 
wing and greyish white in the hind, whilst in P. acco they are all 
whitish. The antenne are black, the pouch is unknown; and the 
position of the species in the genus must therefore remain doubtful, 
though I should imagine that it will be found nearly allied to P. acco. 
P. SACQUEMONTI. 
Parnassius jacquemonti, Boisduval, Sp. Gen. p. 400 (1836) (in 
part). 
? P. jacquemonti, Gray, Cat. Lep. Brit. Mus. p. 76, t. xii. figs. 1, 2 
(1852), 3. 
? P. jacquemonti, Moore, P. Z.S. 1865, p. 488. 
P. epaphus, Oberthiir, Et. Ent. liv. iv. p. 23 (1879). 
? P. actius, var. rhodius, Honrath, Berl. ent. Zeit. 1882, p. 178, 
t. ii. fig. 6, ¢. 
P. epaphus, vay. sikkimensis, Elwes, P. Z.S. 1882, p. 399, t. xxv. 
figs. 4, 5,6, 2. - 
The synonymy of this species is the only one which has given me 
any trouble to clear up, and this arises principally from the fact that 
Boisduval probably used examples of two species in writing his de- 
scription, and that his female type is not now to be found either in the 
Paris Museum, where the other specimens collected by Jacquemont 
which Boisduval described are preserved, or in his own collection, now 
in the possession of M. Oberthiir. The point on which the whole 
question turns, is the fact that Boisduval says in describing the 
male that the fringes are entirely white, which is not the case in 
this species; and of the female he says that it is like the male, “ La 
poche de l’extrémité de Vabdomen assez développée, plissée en 
travers et sans caréne longitudinale.’ As no other species is known 
to exist in which a pouch of the apollo type is without a keel, 
this fixes Boisduval’s female with certainty ; and though the name 
jacquemonti might perhaps be applied to the species of which 
he described the male—my actius, var. himaiayensis—using Obei- 
thiir’s name of epaphus for the species now in question, yet, 
as Oberthiir’s name was applied to Gray’s insect of which he 
had only seen a plate, of which he did not know the female, and 
which, after having seen the specimens figured by Gray, I cannot 
distinguish from actius, I think it is more correct to apply Bois- 
duval’s name to a species of which there can be no possible doubt 
he described one sex. With regard to the insect described by 
Honrath, from specimens collected by Stoliczka, as actius, var. 
rnodivs, I cannot distinguish the male sex from that of P. jacque- 
monti. Charlton’s specimens figured by Gray may be one or the 
