NEW LEPIDOPTERA-HKTEROCERA FROM FORMOSA. 179 



series of four white spots and eight others (four dot-hke) beyond. 

 Hind wings white ; veins, submarginal hne, and margins black ; the 

 upper part of the cell and the outer extremity of the lower part, also 

 the internervular spaces within the submarginal line, from vein two 

 to costa, red. Under side similar to the upper. 



Expanse, 49 millim. 



Collection number, 1214. 



One female specimen from Saizan (8000 ft.), August 8tb, 1908. 



Heterus'ia formosana , sp. n. 



(? . Fore wings dark green, with three large creamy-white spots 

 (two in the cell and one below), and an irregular series of nine similar 

 coloured marks before the outer margin ; the latter marks are small in 

 size, two, three, and eight are linear, the others round. Hind wings 

 pale yellowish, black at extreme base ; outer border blue, broad on 

 costa, tapered towards anal angle, enclosing three creamy-white spots 

 (the largest at end of the cell), and an irregular series of black marks. 

 Under side of the fore wings blackish ; the central area suffused with 

 bluish; outer area of hind wings blackish suffused with bluish; 

 markings are similar to above, except that those on the outer area are 

 larger. 



2 . Agrees with the male, but it has a creamy-white patch at the 

 base of the fore wings, and there is less blue and more black on outer 

 area of the hind wings. 



Expanse, S 58 millim., 2 66 millim. 



Collection number, 658. 



One male specimen from Suisha (Lake Candidius (2000 ft.) ), 

 October 1st, 1907, and a female taken July 26th, 1908, in the 

 same locality. 



The close similarity of the female of H. formosana to that 

 of tricolor suggests that the former may possibly be a local form 

 of the latter. 



Ourapteryx taiwana, sp. n. 



(? . Head white, face and palpi brownish ; thorax white ; abdo- 

 men greyish brown. Fore wings white, apical third blackish ; ante- 

 and postmedial bands oblique, blackish, slightly approximating on the 

 inner margin ; the inner edge of the blackish apical third parallel with 

 the postmedial band ; blackish streaks on costal area between the 

 bands and towards the base ; fringes dark brownish on outer margin, 

 white on the inner margin. Hind wings white shaded with blackish 

 grey on outer area ; a black ringed golden-brown spot on the outer 

 margin above the tail, and two blackish spots below the tail ; fringes 

 golden-brown, preceded by a black wavy line. Under side similar to 

 above, but the shading on the hind wings is darker and the marks on 

 the outer margin near the tail are absent. 



Expanse, 62 millim. 



Collection number, 1666. 



One male specimen from Arizan, September, 1908 (7300 ft.). 



