NEW SPECIES OF GEOMETRIDiE FKOM FORMOSA. 291 



inwardly edged with orange, followed by a greyish band on which is 

 a blackish costal spot and two black marks just above middle ; 

 terminal area suffused with grey ; terminal line black, interrupted at 

 the veins ; fringes orange marked with black. Hind wings have two 

 blackish transverse lines, the first is edged with orange and united 

 with a black discoidal mark, the second is inwardly edged with 

 orange ; area beyond second line suffused with grey ; terminal line 

 black, dilated between veins ; fringes dark grey, orange at base and 

 tips. Under side orange sparsely freckled with black-brown ; trans- 

 verse lines as on the upper side, but blacker and more distinct. 



Expanse, 24 millim. 



Collection number, 1642. 



One female specimen from Kanshirei, September 14th, 1908. 



Semiothisa duhia, n. sp. 



5 . Head and front of thorax brown, rest of thorax brown-grey. 

 Fore wings brown-grey flecked with black on costa; antemedial line 

 brown, curved, indistinct, dotted with black ; postmedial line brown, 

 almost parallel with termen, not distinct towards the costa ; sub- 

 terminal line indicated by black dots and a blackish cloud, the latter 

 on vein 5. Hind wings brown-grey flecked with black on costal 

 area ; traces of dusky medial and postmedial lines, the latter dotted 

 with black. Fringes of all the wings brown, marked with black. 

 Under side greyer than above ; fore wings suffused with brown on 

 the disc ; markings pretty much as on upper side. 



Expanse, 32 millim. 



Collection number, 1887. 



A female specimen from Eantaizan, May 6th, 1909. 



Heterolocha oUvescens, sp. n. 



<y . Head whitish, palpi and pectinated antennae brown ; thorax 

 and abdomen pale olive brown. Fore wings pale olive brown ; 

 antemedial line fuscous, curved, connected with a small fuscous 

 cloud in cell ; discoidal mark black, linear ; postmedial line fuscous, 

 outwardly edged with white, inwardly oblique from apex to vein 2, 

 where it is elbowed, terminating on dorsum near the tornus ; area 

 beyond the postmedial line clouded with whitish. Hind wings pale 

 olive brown ; discoidal mark blackish, indistinct ; postmedial line 

 fuscous, outwardly edged with white, almost straight ; terminal area 

 clouded with whitish. Under side similar to the upper side but the 

 postmedial line on all the wings is darker and the area within the 

 line yellower. 



Expanse, 38 millim. 



Collection number, 1596. 



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



Prionia pulchra, sp. n. 

 (? . Head and thorax carmine, frons rather darker ; abdomen 

 carmine, yellowish between segments. Fore wings carmine with two 

 yellow transverse Hnes, the first almost straight, the second curved 



