320 I.F.PIDOPTERA. 



tlie clay it hides among tlie same plants and is easily disturbed 

 by the passing footstep, flying but a short distance, and 

 often settling again upon a grass-culm, from which it 

 swings loosely at the length of its legs, and then has a very 

 graceful appearance. Generally distributed throughout 

 England, and very common in Northern and Western dis- 

 tricts, less so in the South ; also probably to be found in 

 most parts of Wales, though the only records seem to be my 

 own in Pembrokeshire, and the statement by Mr. G. O. Day 

 that it is " generally common " in North Wales ; in Scot- 

 land to be found throughout the Lowlands, and in the 

 valleys of the Highland Counties, extending to Moray, 

 Perthshire, and Dumbartonshire, and also found in the 

 Orkneys. In Ireland in the districts north of Dublin and 

 Gal way, extending to Derry and Donegal. Abroad its 

 range is a little uncertain, but it is found in Switzerland 

 and throughout the Alpine districts to the Hartz Mountains ;. 

 also in Western Russia, the Caucasus, and Mongolia. 



17. B. decrepitalis, H.-S. — Expanse f to 1 inch 

 (18-25 ram.). Fore wings not elongated, brownish-white 

 clouded with dull pale umbreous ; stigmata and lines 

 obscure, confused with the pale-brown shading. Hind 

 wings dusky white with a narrow brown hind-border. 



AntennsB of the male simple, pale yellow-brown ; palpi 

 porrected. rather thin, brown ; head and thorax pale yellow- 

 brown ; abdomen slender, brownish-white, with a shining 

 whiter edge to each segment. Fore wings moderately broad ; 

 costa flatly arched ; apex bluntly augulated ; hind margin 

 rather oblique, hardly curved ; dorsal margin somewhat full ; 

 colour pale yellow-brown or whitish-brown ; first lin& 

 scarcely indicated in darker clouding; second line oblique, 

 much indented, but direct and very little curved, pale brown \ 

 a brownish cloud occupies the hind-marginal area aud is 

 darker below the apex : orbicular stigma, when visible, rouud 

 and faintly brown ; reniform stigma of the same colour, very 



