Pyralidai from the Khasia Hills. 171 



with cell very short ; costal approximaterl to subcostal near 

 base ; first subcostal anastoraosins; for a considerable distancs 

 with the costal ; medians and radial all approximated from 

 the lower angle of cell. 



Type Plateopsis vesjjertilio. 



Plateopsis vespertiHo^ sp. n. 



Fore wings mouse-colour, smootli, without irroration ; lines 

 dark, thick, first near base, vertical to inner margin before 

 one third, tiie costal portion invisible; a large blackish cell- 

 spot ; exterior line at tliree fourths, parallel for one third to 

 hind margin, then forming atridentate shallow sinus, running 

 in to beneath the discal spot, thence very thick to inner 

 margin; fringe concolorous, with a white spot at anal angle. 

 Hind wings the same, with outer line only ; white spot in 

 fringes near anal angle larger. Head, thorax, and abdomen 

 all concolorous. Underside whitish, with discal spot and 

 outer lines represented. 



Expanse of wings 22 millim. 



One male from the Khasias. 



A very distinct looking insect. 



Genus Coptobasis, Led. 



Coptohasis hiocellata, sp. n. 



Fore wings dull olive-fuscous ; first line near base, bent in 

 middle, the lower arm vertical ; second line at three fourths, 

 obscurely dentate, and hardly forming a sinus, running in 

 very shortly along the second median, and thence obliquely 

 to inner margin at two thirds, faintly edged with paler 

 throughout ; first spot horizontal, oval, with slightly paler 

 centre and dark edge ; the second lunular ; fringe concolorous, 

 without lines. Hind wings with dark discal spot and dentate 

 outer line. Head and thorax concolorous, the abdomen much 

 paler. Underside whitish cinereous, with the lines and spots 

 a little darker. Antennas of male with small but distinct 

 basal process. 



Expanse of wings 28 millim. 



Both sexes from Tenimber. 



Coptohasis tncrassata, sp. n. 



Fore wings glossy fuscous, the costa dark fuscous; first 

 line at one fourth, oblique outward, thick ; second line at two 

 thirds, running vertically straight without a sinus to tlie 



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