﻿NEW SPECIES OF GEOMETRTD^ FROM FORMOSA. 283 



Silahraxas kanshireiensis, sp. n. 



S' . Antennae not ciliated ; head blackish, collar ochreous ; thorax 

 whitish, mixed with ochreous and marked with black ; abdomen 

 yellow, spotted with black marks, the subdorsal series smaller than 

 the others. Fore wings white, basal patch yellow marked with rusty 

 black and flecked with metallic ; antemedial baud loaden-grey, broken 

 towards costa ; medial group of leaden-grey spots on the costal area; 

 postmedial band leaden-grey, maculate, bifurcate at costa, uniting 

 with a yellow centred and metallic-flecked darker spot near tornus ; 

 leaden-grey spots on termen, placed between veins and preceded by 

 larger leaden-grey spots on veins 3 and 4 and some smaller spots 

 nearer the costa. Hind wings white with a large leaden-grey dis- 

 coidal spot ; subterminal series of leaden-grey spots decrease in size 

 towards costa, those at dorsal end black inwardly edged with 

 ochreous and flecked with metallic ; terminal spots leaden-grey. 

 Under side similar to above, but without ochreous or metallic scales 

 on dorsal spots. 



? . Fore wings without marking on dorsal half of median area ; 

 no discoidal spot on hind wings. 



Expanse, 43 millim. <? ; 46 millim. 5 . 



Collection number, 650. 



One example of each sex from Ranshirei (1000 ft.) ; the male 

 taken in June, 1906, and the female in April, 1908. 



Except difference in antennsB, this species comes nearest to 

 Abraxas leopardina, Koll. 



Triphosa arizanensis, sp. n. 



5 . Head and thorax pale brown, darker mixed ; abdomen pala 

 brown. Fore wings pale brown with many darker transverse mark- 

 ings ; subbasal line blackish-brown, double, wavy ; antemedial line 

 black, sinuous, shaded outwardly with blackish-brown ; postmedial 

 line black, undulated, bluntly angled below costa and indented before 

 dorsum, inwardly shaded with blackish-brown ; middle of space 

 enclosed by antemedial and postmedial lines suffused and clouded 

 with dark brown ; discoidal lunule black ; subterminal line pale, 

 interrupted, area beyond dark brown ; area between postmedial and 

 subterminal lines clouded with darker between veins and traversed 

 by three or four wavy dark lines, the latter thicker and more con- 

 spicuous on the costal area, the veins appear to be dotted with pale 

 brown ; fringes dark brown, preceded by a black crenulate line. 

 Hind wings pale brown, basal half suffused with fuscous traversed 

 by darker lines ; space between the dark line limiting the basal half 

 and the subterminal line traversed by four wavy dark lines ; area 

 beyond the subterminal line dark brown ; terminal line black, crenu- 

 late ; fringes dark brown. Under side pale brown suffused with 

 fuscous, markings of upper side faintly visible. 



Expanse, 60 millim. 



Collection number, 1668. 



A female specimen from Arizan, May, 1908. 



Closely allied to T. expansa, Moore. 



(To be continued.) 



