STERRHA. By L. B. Prout. 
S. thricophora Hmps. (23 1). Also characterized by the A forewing; this has “a small patch ot long thrk-ophora. 
hair on inner margin below, just beyond the middle, and long cilia on the outer half of the inner margin. Hind- 
tibia with a reddish tuft at the end, forming a cavity facing the tarsus and covered by the long pale femoro- 
tibial pencil." Shape distinctive; markings extremely weak. Bernardmyo, Burma (A type) and E. Pegu (I j): 
no others known. 
S. vacillata Walk. (= phoenicozona Hmps.) (23 g). Easily known by the cloudy median band and the raciiiata. 
shape of the dark borders. Hindwing of A hairy beneath, midtibia with the inner spur very long, hindleg 
enormously tufted. Borneo (loc. typ.), the Malay Peninsula and from Sikkim to Tonkin. 
S. velutina Warr. (23 g) may be placed about here on account of tlie hairy underside of the A hindwing; veIvlina. 
this hair is strongest on the (ample) abdominal region and the fringe is, on this margin, very long and specialized. 
The hindtibial pencils are partly pale, partly blackish, the tarsus quite short, slightly hairy. As will be seen 
from our figure of a topotypical §, no tangible distinction can be found in the markings from the palest , shortest- 
winged actiosaria ; Warren, indeed, labelled the $ as such. Batjan (loc. typ.) and Amboina. vulcani subsp. vulcani. 
nov. is a dwarfed form (15—16 mm), with the hair on the hindwing beneath rather less highly developed, but 
I can see no further distinction unless the "blackish" hindtibial hair is less dark (shining lead-grey); the type 
A shows the postmedian line of the forewing strengthened at the hindmargin and there unusually oblique, but 
this is not noticeable in other examples. Vulcan I.. 5 AA: 1 $, in the Tring Museum. 
S. simplex Warr. (23 g). Smaller than coercita, the A darker, with slender hindtarsus. Easily known .simplex. 
by the short costal and long, slightly concave abdominal margin of the hindwing, and the coarse dark tufting 
of the A tornus. Hindleg of A short, with strong hair-pencil, tarsus about 1 tibia. The A sometimes has the 
buff markings very weak. The $ is paler, with dark lines edging the (here indistinct) pale markings; it is appa¬ 
rently dimorphic, though not quite sharply so; one form (including all the 9 which are known from Sudest and 
the 2 from the Hydrographer Mountains) is more purple-grey, with the lines not outstandingly strong; the 
other paler, of a more fleshy tone, with the lines moderate (Rossel) or strong (the 2 Kumusi River $$ of s. 
lividula and the majority of the 6 from Upper Aroa River); thus I cannot correlate them definitely with the 
Ac? of the assumed races. The AA °f simplex have the termen of the hindwing appreciably convex. Louisi- 
des, the type from S u d e s t 1. lividula Warr. (23 g A, $)■ On an average a little larger, the apex of the A lividula. 
fore wing slightly more produced, the termen of its hindwing straight or almost. New Guinea, the type series 
from Upper Aroa River. Some outliers (Dampier and Vulcan Islands and New Hanover) are too few or too 
poor to be dealt with at present. liparota Turn., only known to me from Turner's description, a coloured liparota. 
figure of his type A and a A in very poor condition, is clearly a form of the present species and as the ter¬ 
men of the hindwing is "rounded", with the projection at the tornus "slight", it should perhaps be sunk to 
s. simplex, though the expanse is as in average lividula. Kuranda, N. Queensland. The rounded hindwing 
is perhaps exaggerated in the drawing which I have mentioned; it is extremely unlikely that there are two 
closely similar species at Kuranda and the given measurements (A ciliation 1; hindtarsus slender. 1 3 ) agree 
with simplex. 
S. informis Warr. (= insuavis limps., nee Bull.) (23 g). This and the next few species have the A much hi for mis. 
less dark grey than simplex , the termen of the hindwing more or less strongly produced about the 3rd radial 
and 1st median. They are obviously near relatives of remissa Wileman and its neighbours, but are placed here 
on account of the specialization of the A hindwing. This consists, in informis (the type of a "genus Strophoptila 
11 arr.), in a folding of the abdominal margin beneath, from which arises a quantity of spreading hair. Khasis 
(type) and Sikkim, variable in size. — sinuata Wilern. A- Sth. (23 1). a very large <j> from Rantaizan. Formosa, sinuata. 
is probably a local form, or even a synonym, of informis ; rather dark, the median pale line rather strong and 
straight ish. 
S. insuavis Ball, is also founded on a unique $ and this I formerly (Vol. 4, p. 123) regarded as a form insuavis. 
of auricruda, erroneously sinking to it remissa Wileman; Hampson treats it as the same as informis. which is 
more feasible, but at present seems too unsatisfying. The specimen is fairly large and broad-winged, w ashed- 
out looking, with the pale lines very slender; not yet matched. Dharmsala. Smaller and rather narrower- 
winged from Sabathu may belong to it. but are more likely $$ of triangularis. 
S. triangularis Hmps. (23 h) has the pale colour of the group with which I have placed it. but reverts triangularis. 
in the shape of the A hindwing, to the triangular form, even more produced at tornus than in simplex; under¬ 
side of A hindwing with specialized glittering scaling which becomes strong and dense towards the tornus; 
fringe of upperside similarly specialized. $ generally with pale bands. Assam, N. W. India. Malaya, E. Java, 
Bali, probably also Tonkin and Siam. glabripennis Warr., single specimens from Java (type) and Pulo Laut, glabripennis. 
