NEW BRITISH SPECIES. 83 



riorihus, fascia maculari flavkla ante margifie?n, pos- 

 ticiim. 

 Freyer has figured perochrar'ia as a variety o^ ochreariaj 

 and of this fact I have been assured by the sight of the 

 original specimen. It is possible that earlier authors, when 

 describing ochrearia, may truly have had that species, or 

 perochraria, or both together, before them ; hence no certain 

 references can be given. Scopoli first gave the name ochrata, 

 but it is not certain which species he intended. Borkhausen's 

 ochreata and Schrank's ochrearia appear to be our peroch- 

 raria. Hiibner's ochrearia, fig. 110, is from all its cha- 

 racters that species, which is held at Vienna to be the ochre- 

 aria, S. v., where perochraria was formerly considered as a 

 variety of ochrearia. The variety of ochrearia mentioned 

 by Treitschke, and the additional observation on the female 

 given at vol. 7, p. *214, belong to perochraria ; but the later 

 notice given in his supplementary 10th vol., part 2, p. 202, 

 that there is a still smaller, paler yellow variety, belongs to 

 a distinct and new species, the Jilacearia, Tr., which he has 

 also taken in meadows near woods at Fiissen in July ; it is 

 very similar to Hiibner's^<2^7eo/a^'^«, fig. 341. 



Much, however, as jierochraria resembles ochraria, and 

 the latter has also considerable resemblance with rufaria, 

 yet on a careful examination we find considerable differences; 

 those most decided are furnished by the antennae when ex- 

 amined through a lens of considerable power. I annex a 

 comparative sketch of these differences. 



Perochra7'ia. Antennae pale ochreous-yellow ; in the 

 ma^e with strong black-brown pectinations, on which 

 stand bristly grey hairs. The female has small brown- 

 grey pectinations. 

 Ochraria. Antennas pale ochreous-yellow ; in the male 

 the small pectinations are scarcely any darker, each 

 g2 



