PAENASSIUS. 499 
De plus, la fraiir/e des 4 ailes est ent'ih-cment noire. C'est la soule espece do Parnassins oft'rant, 
a ma connaissaiice, cctte particularite. 
" Nord de la Chine (Armand David) ; 1 $ ." (OhcrtJcUr, 1. c.) 
Tar. mandscliuriae, ObcrthUr. " J'ai fait fignrcr la forme de Mantschourio que m'a envoj-ee 
M. Jaukowski en six males at quatre femelles. Le faoies do cette formo geographique est assez 
particulier et cola tient surtout a ce que le fond des ailes est moins blanc dans les echantillons 
de Sidemi que dans ceux de Siberie et du nord de la Chine, ou M. Fabbe David a trouve une 
race superbe et magnifiquement colore'e de nomion. Le feston hyalin qui longe le bord 
marginal des ailes est aussi generalement plus sombre et aveo une apparenee huileuse dans 
les exemplaires de Sidemi. 
" La femelle qui existait dans la collection Boisduval aveo cette etiquette que je transcris 
textuellement 'Nomion, Fischer, Esohscholtz, Calif, russe ' est semblable aux femelles de 
Mantschourie. 
" Dans les six males de Sidemi, les ailes superieures ont tons les points noirs absolument depourvns 
de pupillation rouge et une des femelles est ainsi. Les males paraissent tendre a avoir les 
ocelles rouges des ailes infdrieures depourvus de ponctuation centrale blanche ou au moins 
tres peu fortemcnt ponctues de blanc." {Oberthiir, I. c.) 
Eeferring to F. nomion, in his paper on the genus Parnasshis *, Mr. Elwes 
says : — 
" This species, though at first sight very like P. apollo, may be certainly 
and constantly distinguished by the fringes of the wings, which are conspi- 
cuously chequered black and white ; whilst in P. apollo this is never the 
case to the same extent, though some specimens have a tendency to it. The 
pouch also (though of the same general form) is black, more lengthened 
behind, and set on at the end, and not underneath the abdomen ; the antennae, 
tlie clothing of the body, and the general pattern of the markings are very 
similar. 
" I am not aware that the geographical range of the two species anywhere 
meets, P. nomion first appearing in the mountains of Dahuria, whilst P. apollo 
seems to go no farther east than the Altai Mountains ; but these ranges on 
the Siberian frontier are but little known. 
" P. nomion appears to be common in the valley of the Amur, at Eaddef- 
skaia and Khabarofka, and Christoph found the larva feeding on a yellow- 
flowered Seclum near Vladivostock. According to Menetries P. nomion is 
found near Irkutsk and at Kiachta, and I have seen a specimen from this 
locality in Dr. Fixen's collection. 
" Bremer says it is found on the north side of Lake Baikal on the Ouon 
* Ibid. 1S8G, p. 27. 
