LUEIl DOBFIA. — PARNASSIUS. 



491 



possess specimens of the species. I at first considered it to be merely a local 

 form oi L. puziloi, but the following characters are amply sufficient to separate 

 it from that species. In the first place the " pouch " of female oi L. japonica 

 is without a keel, and is black instead of light chestnut ; this, Avithout 

 reference to other points of difference, at once distinguishes it ; but, further, 

 it is much larger in size, the ground-colour is darker, and the anal blotch is 

 broader and of a bright crimson. 



Found in Japan in mountain districts. Mr. Pryer (Eut. Mo. Mag. xxiv. 

 p. 6G) says : — " This insect appears very early in the year ; my first specimens 

 were obtained on the 15th of April, but it was then getting over; the males 

 appear before the females, and it frequents wooded paths on the mountains, 

 and is very easy to capture." 



I have received a form of this species from Central China, where specimens 

 w'ere taken by a native collector in the mountains in the neighbourhood of 

 Chang-yang. These differ from Japanese specimens in being smaller ; the 

 secondaries agree better with the Amurland L. puziloi *, but the red colour 

 which forms a subanal patch on the secondaries of hoth. imziloi and jajjont'ca 

 is continued in this Chinese form as a subraarginal band as far as the discoidal 

 nervule ; the body is more slender and less hairy than in japonica ; the hairs 

 are reddish brown instead of whitish, and the pouch of the female only differs 

 in its smaller size. This form may be known as var. chinensis (Plate XXXIII. 

 fig.l). 



Genus PARNASSIUS. 



Parnassius, Latreille, Hist. Nat. des Crust, et Ins. xiv. p. 110 (1805) ; Doubleday, 

 Gen. Diurn. Lep. i. p. 26 (1847). 



" Head small, very hairy. 

 " Ei/es oval, not prominent. 

 " Ma.rilUp of moderate length. 



Labial palpi distinctly triarticulate ; the joints nearly equal, the basal one curved. 

 " Aviennce short, gradually clavate, not arched. 



" Thorax rather stout, very hairy. 



" Anterior u ings suhtriaugular, rounded externally, diaphanous. Subcostal nervui'e terminating 



* L. pvziloi, ErscbofF, occurs commonly in Southern Amurland. lleferring to this species, 

 Graeser (Berl. ent. Zeit. 18S8, p. G3) states that the larva is black, covered with a few stiff black 

 hairs, and having the segmental di\isions bluish white. Feeds on Asarum until July. He adds 

 that he found it commonly under stones in the vicinity of the food-plant. 



