480 PAPILIONID.E. 
Mah'. White. Primaries have a large black oblong spot at end of discoidal cell ; the apex, which 
is much produced, and acuminate, is marked with black, the apical fourth of the wing is pale 
orange with a large black spot on the costa and a similar one on outer margin, that on the 
costa frequently unites with the black markings of the apex, forming a broad streak along 
this portion of the costa ; the base of the wing is blackish grey. Secondaries have the pattern 
of the under surface faintly showing through. Under surface of primaries white, marked 
with pale olive-grey along the costa and on apical area, the latter has also two patches of 
darker olive ; discoidal spot as above : secondaries white, mottled with pale olive-grey over 
the whole wing, with two white-spotted dark olive patches from costa and others along the 
course of the median and subraedian nervures ; none of these dark markings invade the outer 
third of the wing, but the pale olive-grey markings are often heavier on this area ; the outer 
margin is narrowly white interrupted at the ends of the nervules with dark olive. 
Female. Similar to the male, but the orange on apicul fourth is usually absent, although in some 
specimens it is faintly exhibited. 
Expanse, J 45-52 millim., J 42-GO millim. 
Pryer remarks : — " this insect undoubtedly only appears once during the 
year. There are no allied forms, and it is the only representative of the 
genus in Japan. I know little or nothing concerning its life-history beyond 
the fact that the larva feeds upon a bitter cress, common in marshy situations." 
Appears to be a common species throughout Japan. It is recorded from 
Shanghai, and I have received several specimens from Chang-yang, Central 
China, and from the province of Kwei-chow, Western China. In some of 
the female specimens from Japan there are distinct indications of the orange 
patch of the male. The Western-Chinese examples are rather smaller than 
those from Japan. 
Distribution. Japan, Western and Central China. 
Genus LEUCOPHASIA. 
Leucophasia, Stephens, 111. Brit. Eut., Haust. i. p. 24 (1827) ; Doubleday, Gen. Diurn. 
Lep. i. p. 38 (1847). 
" Head rather large, very hairy. 
" Eijes large, round, prominent. 
•' Labial palpi rather longer than the head, very hairy. Basal joints long, curved at the base, 
carinate externally, obliquely truncate at the apex ; second joint rather more than one 
third the length of the first, much more slender, ovate, truncate at the base : third joint 
about one sixth the length of the first, oval. 
" Antenrnr. short, terminating in an abrupt, short, compressed club. 
" Thoeax rather slender. 
'^Anterior wings elongate, rounded externally. The discoidal cell very small, barely one third 
the length of the wing. Subcostal nervure five-branched ; the first nervnle thrown off 
