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 beeu 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 antennae 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. JACaUEMONTI. 



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), 6. 



1 P. jacquemonti, Moore, P. Z. S. 1865, p. 488. 



P. epajjhus, Oberthiir, Et. Ent. liv. iv. p. 23 (1879). 



? P. actius, var. rhodius, Honiath, Berl. ent. Zeit. 1882, p. 178, 

 t. ii. fig. 6, S ■ 



P. epapkus, var. sikkimensis, Elwes, P. Z.S. 1882, p. 399, t. xxv. 

 figs. 4, 5, 6, 2 • 



The synonymy of this species is the ouly 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, aud 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 I'extremite de I'abdomen assez developpee, plissee en 

 travers et sans carene lonffiiudinale." 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 — mj actius, var. himalayensis— 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, aud 

 which, after having seen the specimens figui'ed 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. 

 rhodius, I cannot distinguish the male sex from that of P. jacque- 

 monti. Charlton's specimens figured by Gray may be one or the 



