1886.) MR. H. J. ELWES ON THE GENUS PARNASSIUS. 47 
P. stubbendorfi ab Q melanophia, Honrath, Berl. ent. Zeit. 1885, 
p- 274. 
This species appears to have been first discovered by Lehmann 
near Kansk in Central Siberia, and has since been found in Dahuria 
by Radde, and in many parts of the Amur region down to the coast 
by Christoph, Graeser, aud others, where it appears to be abundant in 
many places, and flies from the 19th of May to the end of June or later. 
On the island of Askold it is not rare, four males in my collection 
from this place being larger than those from the Amur, and showing 
traces of the black patches on the cell of fore wing, which are con- 
spicuous in mnemosyne. In Corea a form occurs which seems inter- 
mediate between this species and P. glacialis, but has not the yellow 
body of the latter; and though I have seen no specimens from the 
western limit of its distribution, I should expect to find a similar 
transition to P. mnemosyne. Graeser, however, in Verh. Ver. Hamburg, 
1879, p. 201,says that when all the specimens sent by Consul Lihdorf 
and Dorries from various parts of the Amur are compared, he doubts 
the distinctness of this species from P. mnemosyne, as they show great 
variation in the amount and distinctness of the black markings, 
which sometimes are so distinct as to form a complete transition to 
P. mnemosyne. 
The pouch of the female is similar to that of the last-named species, 
and in five females in my collection varies only in length, and is 
sometimes more produced behind than is usual in P. mnemosyne 
and generally darker in colour. 
P. GLACIALIS. 
Parnassius glacialis, Butler, Journ. Linn. Soc., Zool. ix. p. 50 
(1866). 
? P. eitrinarius, Motsch. Bull. Mosc. 1866, i. p. 189. 
This form, which appears to be found localiy in some of the higher 
mountains of Japan, is undoubtedly very nearly allied to P. stubbendorfi. 
It differs from that species in its larger size and in the well-marked 
yellow hairs of the neck and breast, which in P. stubbendorfi and 
mnemosyne are found in the female only. The ground colour of 
the males is also of a much yellower tint than in P. stwbbendorfi. 
The two females in my collection, which are all that I have seen, have 
a blackish pouch resembling that of P. clodius in being considerably 
shorter than the pouch of P. mnemosyne or stubbendorfi. 
Mr. Pryer says of this species, in his Catalogue of the Lepido- 
ptera of Japan :—“ I have taken this abundantly at Nikko in June 
and July, and received many from Yesso. It varies considerably in 
size, colour, and markings. I have eleven specimens in my cabinet, 
no two of which are exactly alike. Yesso specimens are generally 
whiter than those from Nikko, from whence I have a specimen 
almost black. Some are without the dark patch on disk of fore 
wing, others have one and two patches, and a dark band on the 
outer margin of the fore wing, which sometimes extends to the hind 
wing. The female has sometimes a peculiar horny sheath attached 
to the underside of the abdomen.” Mr. Strecker says he has re- 
