Heterocerous Lepidoptera from Japan. 187 
discoidal area white ; a black spot in the cell and a large 
reniform black spot at the end of the cell ; anal two- 
thirds of external border broadly black ; fringe white, 
traversed by a grey line; pectus sordid white ; anterior 
tibie ferruginous, tarsi brown ; posterior tibie pinky 
whitish; venter flesh-coloured, banded with grey; anus 
ferruginous ; expanse of wings, 1 inch 8 lines. 
Tokei (Fenton). 
ACONTIIDA. 
69. Leocyma nervosa, 0. 8. 
Shining silvery white; primaries above with the 
nervures pale bronzy brown ; antenne brown ; a smooth 
shining black dash on each side of the thorax behind the 
tegule ; primaries below pale golden brown ; the internal 
area and a streak in the cell white ; secondaries and body 
silvery white; legs opaline* ; proboscis orange-yellow ; 
expanse of wings, 1 inch and + line. 
Tokei (Fenton). 
The genus Chasmina of Walker, placed by that author 
in the Leucaniide, will have to sink as a synonym of 
Leocyma ; so that my opinion that Chasmina would prove 
to be more nearly allied to the Acontiide (see P. HS: 
1880, p. 675, note) has been fully borne out ; the species 
above described comes nearest to L. albonitens of Bremer, 
which also occurs at Tokei; but may readily be separated 
by its brown veins, smaller size, and rather different 
neuration ; the subcostal branches and the second and 
third median branches of the secondaries being emitted 
from distinctly longer footstalks; this character does 
not appear in the present instance to be a generic one, 
as it increases gradually as the species diminish in size ; 
thus L. diane (glabra, W1k.), has hardly a trace of either 
footstalk ; L. cygnus has a short subcostal footstalk ; 
L. albonitens has a decidedly longer subcostal one, but no 
median one worth the name (the branches, as in the two 
preceding species, are closely approximated at their 
bases); finally L. nervosa has a long subcostal and a 
short median footstalk. 
*'The tarsi are brownish, but this appears to be due to rubbing. 
