TRIFID^E. 133 



an alarming extent. The inmates of a roadside inn are kept 

 continually at work brushing them out of the house ; the 

 road is almost black with these larvae." Similar visitations 

 in Wales in 1881- were noticed in the local papers — some- 

 times in the most quaint and ludicrous terms. There even 

 appears to be a record of a similar occurrence in that 

 country so long ago as 1 103. Such visitations are far from 

 rare in Sweden ; and this insect may safely be looked upon 

 as the most destructive of lepidopterous pests in grass-lands. 

 Kollar distinctly aflfirms that the immense multitudes 

 noticed by him in the Hartz district were destroyed by con- 

 tinued rains at the time when they should have assumed the 

 pupa state. 



(Jenus 11. HELIOPHOBUS. 



Antennas of the male pectinated ; eyes hairy ; lashes 

 hardly visible ; thorax slightly tufted at the back ; abdomen 

 hairy and furnished with two or three small obscure crests ; 

 fore wings thick, broad behind ; hind wings rather ample, 

 vein 5 very faint. 



LakVjE extremely like that of the last species. 



PUP^ subterranean. 



We have two species readily recognisable : 



A. Fore wings dark brown, with whitish nervures and 

 broadly pectinated antennas. H. popular ix. 



B. Fore wings black-brown, with yellowish stigmata and 

 anteume narrowly pectinated. H. ccspitis. 



1. H. popularis, Fah. — Expanse H to 1^ inch; antennas 

 of the male broadly pectinated ; of the female, simple. Fore 

 wings umbreous spotted and mottled with black ; nervures 

 and edges of upper stigmata distinctly brovvnish-white ; hind 

 wings white, banded with cloudy brown. 



Antenna: of the male very broadly and conspicuously 



