Genera and Species of Pyralidae. 141 



and the whole hind margin broadly fuscous ; costa bright 

 yellow ; near the base are two broad brown spots, the 

 beginnings of two lines, which are angulated on subcostal, and 

 broadening out unite in forming the fuscous basal area ; a 

 third brown spot about the middle of costa gives rise to the 

 first line, which runs obliquely inwards to inner margin at 

 one third ; it is followed in the cell by a roundish hyaline 

 scaleless impression, which is in turn followed by a yellow 

 brown-edged discocellular marking, above which is a small 

 brown spot on costa, and beyond this a brown semiannulus ; 

 the fuscous margin is bounded inwardly by the exterior line, 

 which runs parallel to hind margin, forms a slight but distinct 

 angle opposite the cell, is incurved so as to touch the disco- 

 cellular mark, and then runs obliquely inwards to inner 

 margin about the middle : the dark margin contains a yellow 

 costal lunule before apex and a yellowish blotch above 

 anal angle ; fringe yellow, with brown apex. Hind wings 

 yellow, with base, discal spot, exterior line, and marginal 

 band brown ; fringe as in fore wings. Head, thorax, and 

 abdomen yellowish, marked with brown. Underside the same, 

 but duller. 



Expanse of wings 16 millim. 



One male from the Khasias. 



Thysanodesma eximialis^ sp. n. 



Fore wing3 pale straw-colour, almost wholly suffused with 

 purplish fuscous, the only parts unsuffused being the costa on 

 either side of the exterior line, a small patcli above anal 

 angle on hind margin, and a squarish space in the cell 

 between the two stigmata, and that is whitish and semitrans- 

 parent ; along the inner margin, especially between the two 

 lines, the suffusion is more sparse ; first line at one fourth 

 sinuous, dark fuscous ; exterior line at five sixths, starting 

 from dark costal spot, wavy and parallel to hind margin for 

 one third, then forming a rounded sinus, running in along 

 the first median, thickened below the discocellular and waved 

 to the inner margin ; first discal stigma roundish, flattened, 

 just beyond first line; second oblong, flattened, beyond the 

 discocellular ; both dark-edged ; fringes dark fuscous in the 

 middle and at the anal angle, paler between and towards 

 apex ; a fine pale line at the base, followed by a dark fuscous 

 one and preceded by a blackish marginal line. Hind wings 

 the same, but the discal and costal areas paler, unsuffused. 

 Head, thorax, and abdomen dark fuscous, mottled with 



