194 LEl'IDOPTERA. 



Pita apparently undescribetl. Neither larva nor pupa 

 seems to have been observed here. The egg only had been 

 seen by Mr. Buckler. 



The moth frequents the higher portions of mountains and 

 considerable hills ; from 1200 to 2UU0 feet altitude. Here 

 it sits quietly by day among the grass and herbage, but is 

 alert and rather swift in its motions, rising sharply when 

 approached and flying a few yards to settle again, but usually 

 retreating vp the steep slope, so that considerable labour is 

 often expended in its capture. 



It seems to be distinct from the species known as B.alpinalis 

 abroad, though rather similar, and certainly very closely allied 

 thereto. The latter has a large and somewhat squared white 

 spot in the middle of the fore wings, and the hind wings are 

 of a clearer white. Mr. Stainton apparently regarded the 

 two forms as mere varieties, but there seems to be no 

 evidence of the occurrence in these Islands of that known 

 as alpinalis. 



Our insect seems here to be confined to Scottish mountains. 

 It is common in Perthshire upon Ben Lomond, Ben Nevis, 

 Schehallion, Craig Cross, and other high hills ; in Aberdeen- 

 shire on Braemar; and in similar suitable places in Inverness- 

 shire, Forfarshire, Stirlingshire, Dumbartonshire, and Arg3-le- 

 shire. Hitherto I have no knowledge of its occurrence on 

 anv mountain in England or Wales ; and the only record in 

 Ireland jn-oved.. when the specimen was examined, to 

 be an obvious error. Abroad it is found throughout the 

 Alpine region, and on the mountains of Hungary and 

 Galicia. 



t). B. fuscalis, fSVA^j'.— Expanse ^ to 1^ inch (22-28 

 mm.j. Fore wings silkj', pale olive-grey, each with a faint 

 transverse whitish line edged with smoky grey. Hind wings 

 also bordered with darker grey. 



Antenuaj of the male simple, shining, dark brown ; palpi 

 porrected, ]>ointed, dark brown: head and thorax bronzy 



