222 LEriDOI'TERA. 



cocoon, in which the change to pupa takes place in the 

 spring. 



Pui'A apparently undescribed. 



The habits of this moth are shy and secret ; when dis- 

 turbed it quickly slips away to another retreat close at hand. 

 It usually hides in dense tufts of male fern, brake and other 

 ferns in mountain ravines, or among the thick masses 

 of neighbouring whortleberry, especially frequenting damp 

 hollows. Mrs. Fraser found it also hiding in the bushes 

 of hazel overhanging such spots, and noticed that when dis- 

 turbed it usually flew to another similar bush. It is said at 

 times to sit by day upon the bracken and spread its wings 

 to enjoy the sunshine. Always confined to mountain dis- 

 tricts, and at present known only to occur in Scotland. 

 in Perthshire, Argyleshire, Dumbartonshire, Aberdeenshire, 

 Invernessshire, Argyleshire, and Sutherlandshire. Hitherto 

 it seems never to have been noticed among the mountains 

 of England, Wales, or Ireland. Abroad it inhabits the 

 Alpine districts of Central Europe, the mountains of Silesia, 

 Norway, Lapland, and North-West Russia. 



18. B. olivalis, Scliiff. — Expanse | to 1 inch. (21-25 

 mm.). Fore wings broad and not pointed ; dark olive- 

 brown, with white central and costal spots. Hind wings 

 smoky-white, margined with pale brown. 



Antenna^ of the male simple, shining, brownish-white ; 

 palpi porrected, brown ; head and thorax olive-brown ; 

 abdomen slender, shining, pale grey-brown. Fore wings 

 moderately broad ; costa flatly arched ; apex angulated ; 

 hind margin rather oblique but scarcely curved; colour dull 

 olive-brown ; the first and second lines hardly perceptibly 

 darker ; in the middle of the wing is a squared white spot in 

 the discal cell, and before this a small white dot; beyond it 

 are two yellowish-white dots on the costa, and beneath them, 

 in a line with the discal white spots, is another, equally 



