STERRHA. By L. B. Prout. 
2 31 
margin; postmedian traceable almost to costa, excurved between 3rd radial and 2nd median, incurved be¬ 
hind, reaching hindmargin rather near tornus; area between these two lines, from the radials hindward, 
bandlike though not quite solid (somewhat mixed with the ground-colour); some faint subterminal shading; 
cell-dot. blacker. Hindwing with termen rounded; only the basal area, subterminal and terminal lines and 
fringe remaining of the ground-colour, the rest fleshcolour, in part pale-irrorated. Underside pale, with the 
dark part faintly indicated. Antenna of the $ serrate, ciliation moderate; hindleg rather weak, the tibia elongate 
and somewhat heavily clothed, the tarsus very short. Dutch New Guinea: Mt. Goliath, 5000feet, February 1911 
(A. S. Meek), the type <$, in fair condition; Oetakwa River, 3000 feet, January 1913 (A. F. R. Wollaston), 
a $, rubbed and with the hindwings torn; both in the Tring Museum. 
S. ocnera Prout (23 f). Superficially similar to vacillata (23 g), the purple tint of the borders duller, oenera. 
the body somewhat dark. Hindleg of the S' short, with long hair-like scaling but without the heavy tufts of 
vacillata. Venation the same. Terminal band of forewing without the acute proximal projection. Hindwing 
of the <$ without the rough hairy clothing of vacillata. Some aberrations have the terminal borders more or less 
narrowed, sometimes recalling those of impexa and paraula. Only known from the Kachin Hills. 
S. proximaria Leech (Vol. 4, pi. 7 c). Similar to craspedota (23 h) but generally larger, forewing always proximaria. 
with a well developed cell-dot; in any case easily distinguishable by the venation, as craspedota lacks the areole, 
which is developed in proximaria. Hindtarsus of the $ laterally compressed, clothed on the outerside with 
specialized grey scaling. Not rare in Szechuan. 
S. coercita T. P. Luc. (23 f). Hindleg of $ formed much as in proximaria. Much narrower-winged, the coercitu. 
A hindwing with termen sinuate, tornus somewhat produced and on the underside with a dense patch of specia¬ 
lized scaling; the greyish-drab ground-colour in this sex is almost uniform, the pale lines very slender or almost 
obsolete. The $ is, according to Dr. Turner, an elegant insect, of more normal shape, paler (grey-whitish 
faintly purplish-tinged) with costa more purple, the 3 pale lines well developed, edged with grey distally, the 
terminal fine purple-grey, the fringe brown-reddish. Brisbane district and reaching northward to Kuranda, 
N. Q. Should evidently be placed with the simplex group (see below) in spite of the different shape. 
S. eucrossa Turn. 26 mm. Head whitish, fillet and face dark fuscous. Forewing costa straight to eucrossa. 
%, thence arched, termen slightly rounded, moderately oblique, finely crenulate; whitish with scanty grey 
irroration becoming fuscous towards base; a grey discal dot, 3 slender faint crenulate lines, 2nd and 3rd ap¬ 
proximated. curved, subterminal; termen faintly purple-tinged; cilia with a dark fuscous basal line. Hindwing 
strongly rounded. The curious margins of the wings are distinctive. Katherine, N. Australia in July.” 
S. protensa Bull. (Vol. 4, pi. 7 c). Smaller than proximaria , termen of forewing more sinuous, of hind- protensa. 
wing bent in the middle; terminal dark line less developed but with proximal projections at radials and tornus; 
postmedian line much stronger. Vertex white. Hindtibia of $ longer than femur, clothed with partly expansile 
hair, tarsus short, its 1st joint slightly thickened. Dliarmsala (type) to Assam. I do not know the Ta-tsien-lu 
species which Sterneck has referred tentatively to protensa and of which he has discussed some venational 
anomalies in his only specimen (a $); it should be recognizable from his circumstantial description and the reader 
should refer to Iris, Vol. 41, p. 167—169 and fig. 6 and 7. 
S. castelli Prout (23 f). Similar to protensa but duller. Hindtibia of <$ slightly swollen, especially eastern. 
posteriorly (where it is clothed with a hair-tuft much as in that species), tarsus over y 2 , the long femoro-tibial 
pencil reaching well beyond its middle. Forewing with termen somewhat less sinuous than in protensa, almost 
straight ; colour more tinged with fleshy or rufous, dulled by strong irroration; terminal line weaker, slender, 
in the partly obsolescent; fringe paler. Hindwing with termen irregularly sinuous, median shade strongly 
angled behind cell-dot. Kachin Hills. Also a pretty typical $, in the British Museum, from Sikkim (F. Moller). 
pertensa form. nov. (23 f), perhaps the predominant $-form about Darjiling (possibly yet another species), pertensa. 
is distinguished chiefly by its rather larger size, brighter brown colour (and less irrorated, rather recalling that 
of acuminata ); median shade of hindwing almost straight. Type $ in the Tring Museum, labelled Sikkim. 
25. 4. 89 (J. G. Pilcher). The <$<$ which probably belong to it look paler but are worn and seem to have slightly 
longer antennal ciliation than the type $ °f castelli. 
S. falcipennis Warr. (23 f). Easily known among the falcate-winged Sterrha by its dusky grey-brown falcipennis. 
tone and conspicuous white subterminal; the ordinary dark lines of the generic pattern, not shown in our figure, 
are also traceable, though they can be quite indistinct. Of the typical, N. E. Himalayan falcipennis (Sikkim 
to N. Burma) I know only a $ from “Calcutta”; which is accepted as belonging here, has the antennal 
ciliation rather short, even, hindtibia longish, dilated, tarsus quite short. 
S. persimilis Warr. (23 f). Warren does not specify to what species he considers this “very similar”, persimilis. 
Its postmedian is much straighter than in acuminata and farther from the termen, a dark patch developed in 
