TRIFIDJE. 41 



Westmeath, and Louth, and from Enniskillen. Abroad widely 

 distributed through Central Europe, Southern Sweden, Cour- 

 land, Northern Italy, Southern Spain, and Southern Russia. 



Genus 82. XYLOCAMPA. 



Antennas naked, simple ; eyes naked, having long curled 

 front and back lashes ; head doubly tufted with projecting 

 scales, and with broad tufts at the bases of the antennas ; 

 thorax crested at the back but hardly so on the top ; abdo- 

 men provided with three or four moderate-sized crests ; fore 

 wings rather short, narrow at the base, crenulated behind ; 

 in the hind wings vein 5 hardly reaches the cross-bar. 



We have but one species. 



1. X. lithoriza, Bork; areola, Stand, Gat— Expanse 

 1] to If inch. Fore wings narrow at the base, broader 

 behind, the hind margin crenulated and spotted with black ; 

 colour pale grey, marbled with black and white ; orbicular 

 stigma extended below the median nervure in a rounded 

 blotch which unites it with the reniform. Hind wings 

 smoky-white. 



Antennas of the male rather short, thick, naked, light 

 brown ; palpi short and small, greyish-white, abundantly 

 tufted with long black hair-scales ; eyes black ; lashes also 

 black, long, and curled ; head densely and prominently 

 tufted, the tufts divided into two ridges, pale grey dusted 

 with black ; at the base of each antenna is a large black tuft 

 surrounded with pale grey ; collar large, raised, and peaked, 

 whitish-grey, barred at the back of the head, and more 

 broadly immediately above, with black, above this twice 

 barred, more slenderly and loosely, with the same ; remainder 

 of the thorax covered with fluffy greyish-white scales mingled 

 with black ; back crest small and obscure ; fascicles thick and 

 long, smoky-white ; abdomen shining pale grey, barred with 

 black ; dorsal crests brown, the second and third conspicuous ; 



