PYKAUDIDiE. 
159 
Euxanthis pyrrliodelta, n. sp. 
<$ 2 • 13-15 mm. Head whitish-ochreous. Palpi pale oehreous 
sprinkled ferruginous, terminal joint and tip of second whitish. 
Thorax light ochreons, shoulders brownish. Porewings elongate, 
costa slightly arched, termen nearly straight, rather oblique ; 
violet-brownish-ochreous, lighter towards base; a triangular dark 
red-brown blotch on middle of dorsum, reaching more than half 
across wing, finely white-edged ; costal edge whitish, from § to 
near apex, with some small blackish dots, beyond middle a small 
red-brown spot, and at | a red-brown bar reaching half across 
wing, preceded by some whitish suffusion and a dark brown dot 
towards costa, between these markings and dorsal blotch some violet- 
grey suffusion : cilia light red-brownish, a ferruginous subbasal 
shade. Hindwings light grey, faintly violet-tinged ; cilia pale grey. 
Costa Rica, San Jose ; 3 ex. 
Hysterosia zophocosma, n. sp. 
3 . 15 mm. Head, palpi, thorax dark fuscous. Abdomen with 
very large expansible genital tufts. Forewings elongate-triangular, 
costa anteriorly straight, with strong fold from base nearly to 
middle, posteriorly gently arched, apex obtuse, termen nearly 
straight, somewhat oblique; dark fuscous, obscure darker marbling 
in disc and spots on costa, a blackish-fuscous oblong spot preceding 
a transverse greyish-ochreous mark on end of cell; postmedian and 
prseterminal fasciae of obscure leaden marbling : cilia grey, two 
dark fuscous shades. Hindwings rather dark grey; cilia grey, 
a darker subbasal shade. 
Formosa, Ranrun, July (S. IssiJci ) ; 1 ex. 
PYRALIDIDiE. 
Trichopliysetis cretacea, Ruth 
I have recently obtained from the Ussuri district of East Siberia 
examples of obnubilcdis Christ., which is regarded (probably 
correctly) as identical with cretacea . Christoph notices two forms 
of the species ; these are very distinct in detail, but I find them 
sexual, which did not occur to him. The <$ has on forewings the 
margins of first line much more suffused with dark colouring, the 
second line followed by a dark cloud towards costa, a well-marked 
wedgeshaped dark apical spot, whereas in 2 there is a suffused 
dark apical cloud ; in hindwings. the <5 has margins of first and 
second lines much more strongly dark-marked towards dorsum, 
and connected together there by dark markings. Hampson is, 
however, entirely mistaken in uniting the Australian neojohyla 
Meyr. (of which I have a series) with cretacea; without re¬ 
capitulating other distinctions which are given in my original 
description, an easy character is the sharply defined dark streak 
on termen of forewings from apex to middle, not found in either 
