274 LEPIDOPTERA. 



sugar on tree trunks, sitting down perfectly quietly. Its 

 habits are quite like those of other species in the genus, 

 but in many small details of structure in its stages of growth 

 it differs from them to such an extent that its removal alone 

 into a separate section of the genus, by Dr. Chapman appears 

 to be fully justified. It is not a very common species, but 

 widely distributed, occurring where ash is common in almost 

 every English and Welsh county, though in many of them 

 local or uncommon. Also widely scattered in Scotland, 

 through the district of the Solway, the Clyde and the Tweed, 

 Aberdeenshire, Kincardineshire and Moray, and even common 

 in Perthshire and Ross-shire. Very much more local in 

 Ireland, since it is only recorded from Galway, where it has 

 been met with in several localities. 



Abroad it is found throughout Central Europe, the 

 temperate portions of Northern Europe, Southern France and 

 Southern Russia. 



Genus 3. ARSILONCHE. 



Antennae simple, ciliated ; eyes naked, with prostrate 

 lashes at the back ; head tufted ; thorax covered with long, 

 loosely prostrate scales, not crested ; abdomen smooth ; fore 

 wings long and rather pointed ; hind wings not very ample, 

 vein 5 very slender and weak, arising from an angle in the 

 middle of the cross-bar. 



Larv^ hairy, brightly coloured 



We have only one species. 



1. A. Venosa, Bhh.; Albovenosa, Stand. Cat. — Ex- 

 panse ll" to If inch. Fore wings pointed, reddish white, 

 with two or three longitudinal brown or blackish lines : hind 

 wings pure white, 



Antennse of the male stout, simple, brown in front, back of 

 the shaft white; palpi tufted to the tips, whitish with a brown 

 dash on the outer side ; head and thorax whitey-brown, loosely 



