NEW SPKCIES OF NOCTUID.E AND GEOMETRID^ FROM FORMOSA. 55 



Two male specimens from Arizan (7300 ft.), August 8tb, 

 1908. 



Allied to A. marginata, Warr. 



Lygris tahcana, sp. n. 

 $. Head white, mixed with grey; thorax white, mixed with 

 grey, and marked with black ; abdomen greyish, segmental divisions 

 whitish. Fore wings blackish-brown, inclining to fulvous brown 

 on median area, traversed by sub-basal, antemedial, and postmedial 

 white bands ; these bands enclose brownish lines and are siauous» 

 the postmedial is projected between veins 3 and 5 almost to termen, 

 and some of the enclosed lines are yellowish ; discoidal spot black, 

 oval, white-edged ; subterminal line white, highly flexuous ; terminal 

 line white ; fringes yellowish, black at base, marked with black at 

 ends of veins. Hind wings and underside with colour and markings 

 somewhat similar to those of fore wings, but the basal area is not so 

 dark and is without white band. 

 Expanse, 27 millim. 



Collection number, 820. 



A male specimen from Arizan (7300 ft.), September 25th» 

 1906. 



Comes near L. erectaria, Leech. 



Sterrha parallela, sp. n. 

 $ . Fore wings pale buff with two parallel dusky lines ; discoidal 

 dot black, pale on second line ; postmedial line purplish-brown, 

 indented before dorsum ; area beyond postmedial purplish-brown, 

 enclosing a spot of the ground colour towards apex ; fringes pale buff 

 mixed with purplish-brown. Hind wings similar to the fore wings. 

 Underside as above but area beyond postmedial not purplish. 

 $ . Agrees with the male. 

 Expanse, 20 millim i ; 23 millim ? . 



Collection number, 1646. 



A male specimen from Arizan (7300 ft.), August 21st, 1908,. 

 and a female from Eantaizan (7500 ft.), May 4:th, 1909. 



Somewhat like S. jakima, Butl., but the male aniennae ara 

 finely ciliated. 



HypenorhyncliKS iiwhtrusa, sp. n. 



$ . Fore wings grey sprinkled with olive-brown scales ; ante- 

 medial line blackish, double, almost straight, only distinct on costa ; 

 postmedial line blackish, double, most distinct towards costa and 

 about middle ; interstices of postmedial and antemedial faiatl,y 

 ochreous towards costa ; fringes checkered with black, preceded by 

 a blackish geminate mark toward apex. Hind wings and underside 

 fuscous. 



Expanse, 17 millim. 



Collection number, 1657. 



A male, in poor condition, from Arizan (7300 ft.), August 6tl|^ 

 1908. 



