eimblema] EPIBLEM1DAE 493 



what darker, brown-marked : in catkins and buds of hazel and 

 alder; 11-5. 



4. E. nisella, CI. (cineraTia, Hw.) 13-15 mm. Fore wings 

 grey, more or less mixed with white, slightly ferruginous-tinged, 

 irregularly strigulated with black ish-grcy ; basal patch darker, 

 edge more blackish, acutely angulated in middle ; often a fer- 

 ruginous or red-brown flattened-triangular dorsal blotch beyond 

 this; central fascia slender, irregular, somewhat darker; edges 

 of ocellus, and sometimes a stria above them leaden-metallic ; 

 sometimes whole wing suffused with ferruginous except basal 

 and terminal patches ; termen sinuate. Hindwings light 

 fuscous, terminally dark fuscous. 



Britain to Perth, Ireland, common ; C. Europe, N. America ; 

 8. Larva pale green ; head dark brown : in catkins and on 

 leaves of poplar and Salix caprea ; 6. 



5. E. crenana, J Hi. 13-16 nun. Forewings narrow, dark 

 ashy -fuscous, sometimes more grey or reddish -tinged, costa 

 strigulated with whitish ; dorsal half varying from whitish to 

 ferruginous-brown, rounded-prominent in middle and pos- 

 teriorly, partially edged with blackish marks above ; sometimes 

 a triangular blackish -fuscous praetornal spot ; termen sinuate. 

 Hindwings fuscous, termen darker. 



Norfolk, York, Westmoreland, Perth, scarce and local ; 0. 

 Europe ; 4. Larva palo green ; head pale brown : on Salix 

 caprea ; 7, 8. 



6. E. demarniana, F.lt. 13-15 mm. Head and palpi oohre- 

 ous-whitish. Forewings whitish, costa spotted and strigulated 

 with dark fuscous ; basal patch suffused with dark brown, 

 black-marked, edge obtusely angulated ; central fascia ferru- 

 ginous-brown, strigulated with black ; costal half beyond this 

 mixed with dark grey and streaked with ferruginous ; ocellus 

 partly edged with leaden - metallic ; termen sinuate; a white 

 subapical dash in cilia. Hindwings rather dark fuscous. 



Kent and Sussex to Norfolk, Cheshire, local ; 0. Europe, Asia 

 Minor; 6, 7. Larva in catkins of birch and Salix caprea; 4, 5. 



7. E. immundana, F.lt. 12-14 mm. Differs from E. tetra- 

 quetrana as follows : forewings darker fuscous, hardly ferru- 

 ginous-mixed, basal patch more blackish, edge acutely angulated, 

 dorsal whitish spot more distinct, dark spot before ocellus less 

 marked. 



Britain to Ross, E. Ireland, local ; C. Europe ; 4, 5. Larva 

 light greenish-grey; head brownish- oehreous : on birch and 

 alder ; 7, 8. 



