the Genus Imma. 201 



imperceptible. Antennae dark fuscous, basal joint elongated and 

 enlarged, with dense projectingtnft of scales anteriorly. Thorax and 

 abdomen fuscous. Fore-wings elongate, posteriorly dilated, costa 

 slightly arched, apex rounded, ternien rounded, somewhat oblique ; 

 7 and 8 separate, 8 to costa, 11 curved and approximated to 12 ; 

 fuscous ; submedian fold forming a whitish-ochreous groove towards 

 base, terminating in a small basal spot of raised whitish-ochreous 

 scales ; median area forming a very indefinite ochreous-whitish band, 

 anterior edge running from about | of costa to before middle of dor- 

 sum, acutely triangular-prominent above middle and indented above 

 and below this, on lower half preceded by dark reddish -fuscous 

 suffusion, posterior edge from about | of costa to f of dorsum, unde- 

 fined ; within this band are a semioval cloudy dark fuscous spot on 

 middle of costa and a longitudinal blackish-fuscous sometimes inter- 

 rupted mark in disc, strongly hooked upwards at posterior extremity ; 

 posterior area reddish-tinged and finely irrorated with blackish- 

 fuscous, with a submarginal series of irregular brownish-ochreous 

 triangular marks ; cilia fuscous, with dark fuscous basal line, towards 

 tornus whitish. Hind-wings with subdorsal groove ; dark fuscous, 

 somewhat lighter towards base ; cilia fuscous, with darker basal line. 



Borneo, Singapore, Selangor. I have redescribed 

 this species, as Walker's description is unrecognizable. It 

 is closely allied to ve.lutina, but differs structurally by the 

 elongate basal joint of antennae, and relatively shorter and 

 broader fore- wings ; in velutina also the palpi are largely 

 marked with dark fuscous, 



85. /. velutina, Walk. 

 Moca velutina, Walk, xxvii^ 102. 



Ceylon. 



86. /. nephallactis, n, sp. 



^ $ . 17-20 mm. Head and thorax fuscous sometimes sufFusedly 

 mixed with whitish, shoulders and sometimes patagia streaked with 

 black and whitish-ochreous, more sharply in ^. Palpi white, 

 second joint with broad dark fuscous median band, terminal joint 

 short, dark fuscous except apex. Antennae grey. Abdomen fuscous, 

 apex sometimes white, beneath white. Fore-wings elongate, pos- 

 teriorly dilated, costa gently arched, apex rounded, termen rounded, 

 somewhat oblique ; 7 and 8 separate, 8 to costa ; grey or fuscous 

 sometimes variably sprinkled or suffused with white, in one speci- 

 men strongly violet-tinged ; a black variably interrupted line 



