Heterocerous Lepidoptera from Japan. igs 
markings rich reddish chocolate ; the outer (forked) belt 
broader, and with much straighter inner edge, the sub- 
basal belt less acutely angulated; secondaries with a 
deep orange band across the basal third, tapering from 
the costa to the end of the cell; the ordinary orange 
discal belt much deeper in colour and more angular; a 
large bright ochreous apical patch ; a narrow external 
border continuous with the ochreous patch, and a large 
diffused marginal obtusely conical patch near the external 
angle sordid ochreous; body more uniform in colouring ; 
under surface considerably brighter in colour, ochreous, 
the external area of the primaries and the greater part 
of the secondaries washed with brownish and irrorated 
with minute dusky lines ; the transverse belt just beyond 
the middle of the primaries bright black, instead of dark 
brown, and narrower than in C. amatum, the belt beyond 
it (pale sordid straw-yellow in Bremer’s species) bright 
ochreous, and of more than double the width; external 
angle clear yellow, a discal diffused black patch above the 
latter ; central line of secondaries distinctly sinuous and 
irregular instead of simply arched, the nebulous discal 
belt less distinct and broadly excavated externally; ex- 
panse of wings, 2 inches 9 lines. 
Yokohama (Jonas). 
When we received this species I supposed that the 
above differences between it and C. amatuwm were due to 
sex; as, however, I now know that the sexes of that 
species do not differ either in colour or pattern, it has 
been necessary to give this form a distinct name. 
THERMESIIDA. 
PYRINIOIDES, N. g. 
Aspect of Pyrinia (Geometrites), but apparently allied 
to Thermesia; the primaries triangular, with the costal 
and outer margins slightly sinuous, apex acute ; median 
vein four-branched, the discoidal cell much elongated ; 
secondaries rather small, short pyriform, the cell short 
and very broad; costal border swollen near the base ; 
thorax short, rounded ; abdomen slender, slightly taper- 
ing; head small, with short palpi; antenne rather 
short, not pectinated, but with an extremely short internal 
fringe; posterior tibie with a slender pencil, the full 
length of this joint, emitted from the knee. 
TRANS. ENT. soc. 1881.—PaRT Il. (JULY.) 2D 
