424 Mr. A. G. Butler on Heterocerous Lepicloptera 



uniform colour throughout, with its oblique inner edge 

 quite straight, not arched ; the sinuation of its outer 

 edge is also angular, it is black-edged as usual ; the 

 whitish belt is of the ground colour and narrower than 

 in the preceding species ; it is bounded externally by 

 a black and white line ; there is also a semicircular sub- 

 apical costal blackish brown patch and an irregular band 

 of this colour from just above the middle of the outer 

 margin to the inner margin, leaving an almost semi- 

 circular marginal patch of the ground colour at external 

 angle ; a marginal series of small black spots ; fringe 

 white, with two dark brown stripes ; secondaries pale 

 greyish brown, with marginal spots and fringe as in 

 primaries ; body silver-grey, the head and thorax slightly 

 darker than the abdomen ; under surface silvery whitish, 

 washed with bronze-brown ; costal border of primaries 

 white, speckled with blackish ; a black disco-cellular 

 spot ; fringe as above, but with grey stripes ; secondaries 

 irrorated with dark grey ; a brown disco-cellular spot 

 and undulated black-dotted discal line ; fringe white, 

 with two grey stripes ; body minutely black-speckled. 

 Expanse of wings, 31 mm. 



" Valparaiso, in February." — T. E. 



135. Heterophleps stygiana, n. s. 



Dark smoky brown ; primaries with nearly the pattern 

 of the preceding species, but the outer edge of the patch 

 on the subbasal area (which is only defined internally by 

 an oblique black and white stripe) undulated ; the outer 

 edge of the pale post-median belt less strongly angulated 

 towards costa, and regularly arched from the angulation 

 to the inner margin ; external area decidedly broader, 

 separated from the narrow pale belt by a black stripe, 

 with white external edge as usual ; the inner half of the 

 external area forms an angulated and arched dark 

 fuliginous belt, limited towards apex by a whitish streak ; 

 the outer half is paler and greyish upon the margin, 

 where there is a series of black s]3ots ; fringe whitish, 

 traversed by a broad dark brown stripe ; secondaries 

 rather greyer than primaries ; fringe the same ; pri- 

 maries below greyish brown ; costa pale sandy yellow, 

 speckled with blackish ; fringe as above ; secondaries 

 sandy yellowish, irrorated with blackish scales ; a small 

 blackish disco-cellular spot ; external area bronzy 



