MONOSCHALIS. — CHALCOSIA. 
63 
MONOSCHALIS, g. n. • 
Male. Differs from Thyrassia in the second subcostal nervule of the fore wing not being 
stalked with the third and fourth. Hind wing Avith the first subcostal absent; the second 
from near the middle of the cell. 
Monoschalis virescens. (Plate CLVII, fig. 11.) 
Expanse <S \^ inch. 
Male. Very dark shining green. Fore wing with a large transparent spot at end of cell ; 
one in the interspace below it extending below the first median nervule, with a small spot 
below it ; a bipid subapical spot on the ' radial nervule. Hind wing immaculate. Abdomen 
with a broad yellow band on the third segment. 
CHALCOSIIN^. 
Heteropan cupreatum. (Plate CLVII. fig. 10.) 
Expanse | inch. 
Male. Fore wing very dark brown, with metallic coppery tints towards the outer margin. 
Hind wing deep violet-blue as in H. dolens, Druce. Antennte black, with a slight metallic- 
purple hue ; thorax dark brown ; abdomen violet-blue. The underside paler, except the costal 
and outer margins of both wings. 
Chalcosia myrrMiia. (Plate CLVII. fig. 14.) 
Expanse 1| inch. 
Male. Allied to C. affinis, from which it differs in the third median nervule and lower 
radial of the fore wing not being stalked, and the veinlet in the cell not forked, and in having a 
large basal yellowish-white patch covering the whole base of the wing, except a broad coppery- 
green band along the costa, joining the postmcdian pale band on inner margin, and 
leaving a bimaculate medial band of coppery green ; the green apical and outer areas are 
almost uniformly shot with cupreous, and there are only slight traces of the black between the 
nervules which is so prominent in C. affinis, and, as in that species, there arc some indistinct 
subapical spots. Hind wing as in C. affinis. 
Also in Mus. Oxon. from Ceylon. 
The habitats of the Ceylon forms of Chalosia are : — C. (juaclrifasciata, a race of C. thallo, 
Linn., at sea-level ; the mountain form, C. venata, with its broad-banded variety similata, at 
2500 feet, — the females of these three forms being indistinguishable j and C. myrrhina 
and pretiosa with its var. albina at 4000 to 5000 feet. 
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