﻿NEW SPECIES OF HETEROCERA FROM FORMOSA. 61 



Collection number, 824. 



A female specimen from Arizan (7500 ft.), September 15th, 

 1906. 



Near P. affinis, Moore. 



Ochyria mediofascia, sp. n. 



^ . Head and thorax greyish white, the latter darker mixed ; 

 abdomen greyish white, mixed and banded with darker ; antennae 

 ciliated. Fore wings greyisli white, powdered with darker ; subbasal 

 line black, almost straight; antemedial band black, parallel with the 

 subbasal line ; postmedial band represented by three tine black 

 sinuous lines, filled in with blackish at costal end, approaching the 

 medial band on dorsum ; two blackish marks on the costa before 

 apex ; terminal line black, interrupted ; fringes grey, paler at base 

 and tips. Hind wings whitish suffused with fuscous, indications of 

 three dusky medial lines. Under surface whitish, suffused with 

 fuscous on the fore wings, and powdered with dark greyish on 

 the hind wings. 



2 . Similar, but the costal extremity of postmedial not filled in 

 with blackish. 



Expanse, 28 millim. 



Collection number, 1804. 



A male from Arizan, March 2nd, 1908 ; and a female from 

 Rantaizau, May 9th, 1909. 



Closely allied to O. designata, Hufn., the North American 

 form of which it closely resembles. 



Ochyria viriditincta, sp. n. 



2 . Head and thorax dark grey brown, abdomen rather paler. 

 Fore wings pale olive green, basal patch and medial band purplish 

 grey ; the basal patch is outwardly limited by a slightly waved black 

 line ; the medial band (which is traversed by two faint w^avy black 

 lines) is edged with black, the inner edge indented below costa and 

 again near dorsum, the outer edges sinuous and bent outwards about 

 middle ; terminal border purpHsh grey, tinted with crimson between 

 veins 3 and 5, interrupted towards costa by an oblique streak of the 

 ground-colour from apex, the border is inwardly edged by a dentate 

 black line ; space between terminal border and the medial band 

 traversed by a wavy olive line ; space between medial band and 

 basal patch transversely clouded with greyish ; fringes dark grey, 

 paler at base. Hind wings whitish, suffused with fuscous inclining 

 to blackish on basal two-thirds ; fringes pale grey, marked with 

 darker at ends of the veins. Under side fuscous, marking of upper 

 side of fore wings traceable ; the hind wings have a. blackish discoidal 

 dot, a diffuse blackish sinuous postmedial line, and traces of a dusky 

 subterminal band. 



Expanse, 34 millim. 



Collection number, 1878. 



A female specimen from Arizan (7300 ft.). May, 1908. 



Resembles O. sufumnta, Schiff. 



