MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 103 



men hardly sinuate, almost straight, strongly oblique. Snow white 

 with a brilliant gloss, markings dark fuscous, dull. Fine and irregular 

 dusting all over the wing; basal patch small, edge straight, strongly 

 inwards-oblique; pale fuscous, containing a triangluar dark costal 

 spot, narrowly produced along edge to base of costa and an irregular 

 dark fuscous double mark: in fold and on dorsum; a rather narrow 

 inwards-oblique transverse fascia before 1/3, moderately curved and 

 concave anteriorly, not quite reaching dorsum but merging in a large 

 patch of sparse fuscous dusting extending over dorsum along its 

 median three fifths; a streak along median fifth of costa, its posterior 

 end connected with a large irregularly triangular transverse patch 

 over end of cell, not reaching margins of wing; this patch with upper 

 half dark fuscous, upper angles well defined and rounded, posterior 

 connected with a roundish spot on costa at 2/3; two smaller round 

 costal dots between preceding and apex; a light fuscous strongly suf- 

 fused broad curved fascia, outwards-concave, first almost horizontal 

 from apex, then inwards- oblique, almost parallel to termen, finally 

 curving into tornus; some five roundish terminal dots between veins, 

 interconnected by a darker marginal line. Ciha white, median third 

 suffusedly pale greyish fuscous. 



Hindwing whitish, cilia white. 



Male genitalia: Tegumen weak, broadly oval. Uncus small, tri- 

 angular, with a pointed top. Vinculum broadly semioval. Valvae 

 tightly joined to vinculum; sacculus broadly egg-shaped and flat. 

 Cucullus smaller than sacculus, moderately haired and concave, with 

 a very large, strongly curved prong, being continuation of the strong 

 costa, with one or two triangular toothlike processes at base, turned 

 inwards. Aedeagus rather small, spoon-shaped, with a slender stalk. 

 Cornuti, a patch of very fine spines in the vesica. 



Material examined: Luzon, Benguet Subprov., Pauai, Haights 

 Place, 7000 ft, 4.XIII.1912 (A.E. Wileman), 1 c^, holotype, genit. 

 sUde5573 (USNM). 



Meridarchis Zeller, 1867 



Key to the Philippine Species of Meridarchis 



1. Whitish grey with round black dots M. alta, new species 



Not so colored 2 



2. Forevving with a large dark subtriangular patch on costa 3 



Forewing with a series of costal dots and two irregular spots in disc. 



M. bifracta, new species 



3. Light ochreous touched with tawTiy; subterminal fascia very faint; a dark 



basal streak along costa M. oxydelta, new species 



Pale fuscous ochreous; subterminal fascia well defined, base of costa not 

 marked M. scythophyes, new species 



