TRIFID^. lOI 



wing-covers swollen, divisions of segments rather distinct, 

 a rough edge of sculpture along the extreme front of each ; 

 hinder segments rather swollen, and the last suddenly rounded 

 off ; anal points ver}^ slender and straight, blackish, outside 

 them two very minute points ; subterranean. 



The moth appears never to be taken in the daytime; 

 doubtless it conceals itself effectually close to the ground. 

 It flies at rather late dusk, but from the dark colour of its 

 hind wings is not at all conspicuous on the wing. It is, 

 however, strongly attracted by heather-bloom, and where that 

 is not attainable, by ragwort blossoms, and may sometimes 

 be taken at sugar and at light. More especially found on 

 extensive heaths, and open woods bordering them. Very 

 local in Kent, Surrey and Sussex, more frequent in Hants, 

 scarce in Dorset, more frequent, though local, in Devon and 

 Cornwall, but common in some seasons on Dartmoor; still local 

 and more scarce in Somerset, Berks, and Oxfordshire, and 

 also in the Eastern counties ; commoner on the hills of the 

 Midland counties and sometimes plentiful in North Stafford- 

 shire and Salop. Apparently found throughout Wales, and 

 in the South of Carmarthenshire commonly, though in Pem- 

 brokeshire it is scarce. Local in Yorkshire, Lancashire, and 

 Cumberland ; but very much more plentiful on the mountain 

 heaths of Scotland, where it is generally distributed at least 

 to Morayshire, and found in the Hebrides and Orkneys. 

 Much more uncommon in Ireland, but recorded from Kerry, 

 Galway and Sligo. Abroad its range seems to be rather 

 restricted, but it is found in Western Europe, Switzerland, 

 Central and Southern Germany and other parts of Central 

 Europe, and in North Italy. 



Genus 8. EUROIS. 



Antennae of the male threadlike or finely notched, naked 

 or faintly ciliated ; eyes naked, having stiff half -erect back 

 lashes ; thorax crested at top and back ; abdomen with one 



