NEW SPECIES OF BOARMIIN^. FROM FORMOSA. 71 



One male from Arizan (7300 ft.), July, 1908, and another (the 

 type) from Kantaizan (7500 ft.), May, 1909. In the Arizan 

 specimen the fore wings are less powdered and clouded with 

 black than the type. 



Aids formosana, sp. n. 



Fore wings pale brown, powdered and striated with darker 

 brown ; costa striated with dark brown ; antemedial and medial lines 

 black at extremities, but indistinct between ; postmedial line black, 

 dentate, outwardly edged with ochreous ; subterminal line pale, 

 wavy, edged inwardly with black at costa above middle and towards 

 dorsum ; two series of black dots beyond, one of which is on the 

 termen ; the dorsum is tinged with ochreous, and there are faint 

 streaks of the same colour on or between the veins from postmedial 

 line to termen. Hind wings whitish brown, basal third thickly 

 sprinkled with dark brown, except on costal area ; antemedial line 

 blackish, rather broad ; medial hne blackish, dentate, outwardly 

 edged with ochreous ; postmedial line blackish, wavy, outwardly 

 edged with the ground colour ; area beyond medial line heavily 

 sprinkled with dark brown ; double series of black dots as on fore 

 wings. Under side pale brown suffused with fuscous, costa striated 

 with dark brown ; all the wings have a black discal spot, that on the 

 fore wings rather large ; postmedial line on fore wings represented 

 by black marks on the veins ; a blackish cloud- like subterminal 

 band ; medial line on hind wings blackish, dotted with black towards 

 costa. 



Expanse, 64 mm. 



Collection number, 1537. 



A male specimen from Arizan (7300 ft.), August, 1908. 



Allied to A. roboraria, Schiff. 



Aids obliquisigna, sp, n. 



(J . Fore wings whitish, rather silky, powdered and clouded with 

 brown, especially on basal and terminal thirds ; antemedial hne 

 black, only distinct on costa, median nervure, and towards dorsum, 

 where it joins an oblique black streak ; postmedial hne black, dentate 

 from costa to vein five, thence undulate to dorsum, where it termi- 

 nates in a black quadrate spot ; subterminal line dusky, indistinct. 

 Hind wings agree in colour with fore wings ; three transverse lines, the 

 first and third brown, diffuse ; the second black, very narrow towards 

 costa, broadened on dorsum, followed by a brown shade-hke band. 

 Under side pale fuscous, silky; blackish discoidal mark and post- 

 medial line on all the wings. 



Expanse, 54 millim. 



Collection number, 795. 



A male specimen from Rantaizan (7500 ft.). May, 1909. 



Allied to A. roboraria, Schiff. 



Aids nigronotata, sp. n. 

 ^ . Fore wings grey-brown with slight reddish tinge ; basal 

 band black, interrupted at vein one ; antemedial line blackish, 



