90 
ARGYROCOSMA. By L. B. Prout. 
semipurpu¬ 
rea. 
monosticta. 
mianta. 
agathoides. 
megaspila¬ 
ria. 
pannosa. 
hjra. 
incomp- 
taria. 
intermedia- 
ta. 
apatella. 
undiferata. 
stictosche¬ 
ma. 
gibbosa. 
isospania. 
R. semipurpurea Warr. has the distal patch still larger, more violet in colour, its proximal side without 
the deep excavation, reaching the costal margin, though enclosing a large green apical spot. Distal margins 
without the white spots. Assam and Malay Peninsula, very rare. 
R. monosticta Wehrli (Suppl. 4, pi. 1 d). $ unknown, <$ closely similar to the $ forms of megaspilaria, 
but without apical spot on the hindwing, the patch on the forewing black-brown in its inner half, light red- 
brown in its outer. The 4 spurs of the hindtibia short; in one example (out of 11) the proximal pair is wanting. 
E. China. 
R. mianta West (12 c) also has the forewing much like megaspilaria but with somewhat less ill- 
developed antemedian line; hindwing w r ith a rather large apical blotch. Luzon, only the $ known. 
Section B ( Spaniocentra Prout). Hindtibia in with 2, in $ with 4 spurs. 
R. agathoides Prout (12 b). The irregular markings recall a small Agathia more than any other known 
Rhomborista. Founded on a A from Mindanao. A larger $ from the same locality, which may belong with 
it, or to some unknown <$, has similar borders to the hindwing, also to the forewdng anteriorly, but has the 
cell-dot minute, the transverse markings wanting, an extremely large purplish blotch on forewing, intermediate 
between those of megaspilaria and semipurpurea. 
R. megaspilaria Guen. (= uniplaga Walk.) (11 c). Founded on a $ from Sarawak. In that sex the 
patch at tornus of forewing is rather large, reaching to or across the 3rd radial, intermediate in colour between 
those of devexata (11c) and semipurpurea ; in the <$ it is small and encloses a moderate white spot. Malay Peninsula, 
Java, Sumatra and Borneo. - pannosa Moore, from Ceylon, and reaching Central India, is rather less small 
in the <$, with the tornal spot more extended; the $ differs little from that of megaspilaria , but both sexes show 
a somewhat larger mark at the apex of the hindwing. — Larva slender, green, twiglike, with the prothorax bifid 
in front, much as in the Hemithea group; on Loranthus. Pupa green. — lyra Swinh. (Vol. 4, pi. 2 b, as pannosa) 
is a rather large, rather variable form, with the tornal patch somewhat reduced in the $, that of the generally 
about as large as in megaspilaria -db hut darker and enclosing a smaller white spot or dot, which may even be 
wanting altogether; sometimes the patch itself is greatly reduced. Khasis (common) and reaching Nepal west¬ 
ward, Hainan and Formosa eastward. — incomptaria Leech (Vol. 4, p. 19), from W. China, is rather bluer 
green, markings reduced, antemedian of forewing obsolete. 
R. intermediata Prout. Between megaspilaria and undiferata in shape. <d hindtibia strongly dilated, 
as in the latter. Tornal patch at least as dark as in gibbosa (4e) and almost as large. S. Celebes. 
R. apatella West. ‘'Forewing asphodel green, costa dark greyish brown, edge white; a narrow border 
of dark greyish brown on termen, increased in width from vein 3 to tornus, forming a patch; a white spot at 
apex, a larger one in patch at tornus; termen slightly angled at vein 4. Hindwing border enlarged at apex to 
a small patch with white centre; inner margin dark greyish brown.“ Luzon, 1 <$. Probably an ab. of the follo¬ 
wing, with purpler, paler-centred terminal blotch than the type. 
R. undiferata Walk. (= unduliferata Oberth.) (12 b). $ much like those of some megaspilaria forms. 
But in both sexes the red terminal line broadens at the apex of the forewing, more than in any other Rhom¬ 
borista, and the hindwing often shows more extended bordering. The further differs in the shape of the forewing 
and of its tornal patch. Borneo (?), Celebes (type), Burn and Ceram. 
R. stictoschema Prout (12 b). Possibly a race of gibbosa, but scarcely so eccentric in shape. Cell-spots 
larger, distal margins with triangular spots on the veins, etc. Ceram. 
R. gibbosa Prout (4 e) is the only Rhomborista yet known from New Guinea and is characterized 
by the peculiar shape of the forewing. hindtibia dilated, as also in undiferata. Dutch New Guinea (loc. 
tvp.) and Waigeu. 
Section C. Hindtibia in $ and $ with 2 spurs. 
R. isospania Prout (12 b). Very similar to megaspilaria except in the tibial armature of the $. Tornal 
blotch a little duller, terminal line developing small triangular spots somewhat as in stictoschema. Bombay 
and Ceylon. 
56. Genus: Argyrocosma Turn. 
Nearly related to those Gomibaena in which the subcostal venation is specialised, SC 1 being stalked 
with the others and SC 2 arising after SC 5 . Palpus less long-scaled. Discocellulars very oblique, angled outward 
at the origin of the 2nd radial. Both wings with fine whitish strigulation. Founded on argosticta, to which 
phrixopa is very close, if not indeed a race. 
