94 LEPIDOPTERA. 



in plenty, in large woods, in Surrey, Sussex, Hants, Dorset, 

 Wilts, Berks, and Oxfordshire ; and in the Cotswolds, and 

 the Forest of Dean, in Gloucestershire. In Kent it seems to 

 be very rare; less so in Essex and Suffolk; very much 

 more plentiful in hill districts of Staffordshire, Derbyshire, 

 Herefordshire ; Wyre Forest, Worcestershire ; and some 

 portions of Yorkshire, Lancashire, and Cheshire ; occurring 

 also in Cumberland, and rarely in Northumberland and 

 Durham. On some of the mountain sides in North Wales it 

 is plentiful, but in South Wales apparently scarce — only 

 recorded in Glamorganshire. In Scotland widely distributed, 

 and locally common in Wigtownshire, Dumfries-shire, Clydes- 

 dale, and Arran ; also in Perthshire, Stirlingshire, some of 

 the hills of the South-east of Scotland, Moray, Sutherland- 

 shire, the Hebrides, and the Shetland Isles. In Ireland also 

 very local; plentiful in Kerry, found also at Glengariff in 

 the Co. Cork; in (ialwaj-, ilayo, l-'ermanagh and Tyrone; 

 and rarely in Londonderry and Sligo. 



Abroad it has a wide range through Central Europe, 

 Northern P]urope except the arctic districts. Northern Italy, the 

 Ural mountain region, the great Central Asian mountain dis- 

 tricts, Tartary, and Western China ; and in North America, in 

 New York, many parts of New England, Michigan, Colorado, 

 Alaska, Vancouver, Caiuida, Nova Scotia, and Labrador. 



2. M. tristata, X. — Expanse 1 to 1^ inch. Wings 

 white with interrupted and irregular smoky-black bands at 

 the base, middle, and hind margin. 



Antennas of the male short, simple, nearly naked, black 

 brown ; palpi small, of the same colour ; eyes dark-brown ; 

 face and head black dusted with white ; thorax slender and. 

 with the abdomen, mottled black and white, and the latter 

 barred with wliite at the edges of the segments; anal tuft 

 small. Fore wings rather narrow ; costa almost straight, 

 except at the base and apex, where it is faintly arched ; apex 

 angulated ; hind margin oblique, gently curved ; dorsal 



