TRIFIDJi. 8 1 



above sea-level upwards, in the Ranuoch, Breadalbane, Glen 

 Artney, and other mountainous districts of Perthshire, and 

 also in those of Aberdeenshire, where within the last few 

 years, and notably in 1889 and 1890, it seems to have become 

 more widely distributed and common. So far as I can ascer- 

 tain it has, as yet, only been found in these two Scottish 

 counties, but it is difficult to believe it absent from other 

 mountainous parts of Scotland. It was first discovered in 

 Perthshire, about the year 1853, by that pioneer of travelling 

 collectors, Richard Weaver. There is no sufficient reason to 

 believe that it has ever been met with in England, Wales, 

 or Ireland. Abroad it is found in mountainous districts in 

 Central Germany, Switzerland, and Central Russia ; and — in 

 a larger, rather greyer local variety — in the Pyrenees, Lapland, 

 Finland, and the Altai Mountains. 



14. N. subrosea, Steph. — Expanse li to If inch. Fore 

 wings broad, ample, truncate, pale brownish-purple ; a darker 

 stripe before the hind margin ; orbicular stigma oblique, im- 

 perfect, indistinct, preceded and followed by a dark spot 

 hind wings whitish with a submarginal grey band. 



Antennae of the male decidedly pectinated with slender, 

 solid, ciliated teeth, which diminish to mere notches toward 

 the tip : light brown. Palpi tufted, dark brown, the third 

 joint long, pale at the tip ; head strongly tufted, dark chest- 

 nut but between the antennae pale pinkish-brown ; collar 

 similar, dusted along the edge with light brown ; remainder 

 of thorax pale pinkish-brown ; the long scales drawn together 

 at the back into faint crest-like knobs tipped with chestnut ; 

 fascicles extremely pale purplish-brown ; abdomen shining, 

 whitish-brown dusted with browner ; lateral and anal tufts 

 reddish. Fore wings broad ; costa distinctly rounded ; apex 

 angulated; hind margin nearly perpendicular, slightly 

 rounded ; dorsal margin nearly straight ; colour pale purplish- 

 brown or brownish -pink ; basal line limited to two small 

 chocolate streaks ; first line very indistinct, direct, slightly 



VOL. IV. p 



