Genera and Species o/Tyralida?. 99 



absent. Neuration : fore wings, cell half as long as wing ; 

 discocellular angulated, first median at two thirds, second 

 from lower angle; third and lower radial close together 

 shortly above the angle ; upper radial from the angle of the 

 discocellular ; fifth subcostal from upper angle of cell, third 

 and fourth stalked from before the angle, second close to and 

 parallel to their stem, the first opposite the first median. 

 Hind wings: cell not half the length of wing; discocellular 

 angulated, the lower arm prolonged, oblique; medians and 

 lower radial as in fore wings. Scaling smooth and sparse, 

 the wings semitransparent j the general structure weak and 

 feeble. 



Type Idiusia benepictalis, sp. n. 



Idiusia benepictalis, sp. n. 



Wings pale gilded yellow, with dark brown markings. 

 Fore wings with the whole base brown, separated by a narrow 

 yellowish fascia, not reaching the costa, from a broad bent 

 fascia, brown like the base, which again is succeeded by a 

 broad brown squarish blotch, not reaching below the median 

 vein, excepting a small curved spur along the second median 

 nervule, and with its edges all concave ; between the two 

 blotches is a small round yellow spot; exterior line thick, 

 curved, wavy, forming a tridentate sinus over the three 

 median nervules, followed immediately by a much broader 

 submarginal fascia, which touches the exterior line below the 

 costa, on the lower radial and on the first median nervule, 

 runs into the apex, and throws off a narrow streak just below 

 the apex and three more in the lower half of the hind margin, 

 all four running through into the fringe, which otherwise is 

 wholly yellow ; costa from beyond the brown basal area 

 broadly deep yellow. Hind wings with extreme base and 

 largish discal spot brown ; the two outer lines exactly as in 

 fore wings. Thorax, face, and abdomen brown ; collar and 

 basal joint of antenna? yellowish ; palpi brown, with yellow 

 rings. Underside paler, with only the apical markings on 

 either wing and the discal blotch of fore wings represented, 

 the other markings of the upperside merely showing through. 



Expanse of wings 28 millim. 



Several males and females from the Khasia Hills. 



The insect reminds one strongly of Hyaloplaga pulchralis, 

 Moore, but the markings are all much thicker ; the costa of 

 the hind wings is not bulged, as in that species, and both the 

 shape of the palpi and the neuration are different. 



The female, which I have only recently become acquainted 



7* 



