( 13 ) 



end of the median vein whitish ; a slight oblique grey shade from apex ; a row of 

 distinct black terniiniil dots ; fringe concolorons. 



Hindwimj : dark grey ; the costal third bone-colonr ; a dark cell-spot and the 

 veins darker; in the 9 a dark curved onter line, followed by a darker border; 

 fringe bone-colonr. 



Underside bone-colonr ; the cell of forewiiig dark grey, and in the ? a dark 

 grey outer line in botli wings; terminal black spots ; a dark cell-spot in hindwiug ; 

 costa of both wings pale brownish speckled with black. 



Head, thorax, and abdomen bone-colonr; ventral tuft blackish. 



E.xpanse of wings : S 30 mm. ; ? 40 mm. 



1 c?, 1 ? from Darjiliug ; the (? captured by F. Mdller, tlie ? by Knyvett, 

 May and June 1889, 75UU ft. 



Allied to Aavistigma Brem. and inomaia Leech. 



Subfamily GUCULLIANAE. 

 Genns Isolasia gen. uov. 



Allied to Elwesia Hmps., with which it agrees in the main, and especially 

 in the upstanding prothoracic crest ; but the dorsum is also strongly tufted with 

 similar long spatulate-tipped hairs ; the praeanal segments of the abdomen are 

 armed with lateral tufts of hair, which are equally strong in the ? and in the c? ; 

 jjcctus and femora densely woolly ; termen not so deeply crenulate as in 

 Elwesia. Type : Isolasia biramata spec. nov. 



28. Isolasia biramata spec. nov. 



Fore.wing : pale ochreous, slightly rufous-tinged, with the basal area to beyond 

 middle of inner margin, a triangular blotch on middle of costa, and the terminal 

 area beyond subterminal line dark brownish fuscous ; the pale ground colour 

 therefore forms a large V, of which the longer outer arm runs from before apex to 

 inner margin and the shorter inner arm begins with the pale orbicular stigma ; the 

 lines pale with dark edging ; the subbasal angled ; the inner oblique outwards, 

 hardly waved; the outer forming outer margin of the costal triangle and marked 

 as two dark lines across the shorter arm of the V ; snbterminaj line edged 

 outwardly by the dark terminal area, sometimes bright ochreous, preceded by 

 brown wedge-shaped spots ; reniforra stigma obscured by the brown of the costal 

 triangle, but slightly edged with ochreous ; a wavy dark terminal line ; fringe 

 fuscous brown with pale chequering and pale basal line. 



Hindwing : brownish grey, paler towards costa, with dark cell-spot and 

 terminal line. 



In the ? the contrast between the dark and light areas is less consjiicuons, the 

 ochreous ground being browner and the fuscous areas paler and more broken up ; 

 the reuiform stigma pale; the hindwing more uniformly fuscous. 



Underside pale ochreous in the c?, greyer ochreous in the ?, dusted with 

 fuscous and rufous ; cell-spots and outer line dark brown. 



Head, thorax, and abdomen brown with ochreous speckling ; the lateral tufts 

 of abdomen rufous. 



Expanse of wings : 36 mm. 



1 9 from Sikkim (0. MoUer), 3(?c?from Sikkim (Darjiling), taken by Col. 

 Pilcher in August ISbU, 



