60 CARADRTNINA [obthosia 



7. Hindwings whitish . . . .8. 



grey . . . . .9. 



8. Hindwings ochreous-tinged . . 7. (jilvrnjo. 



,, not ochreous-tinged . . 8. ocellaris. 



9. Forewings with subterminal line nearly straight . 10. 



,, ,, ,, not nearly straight 11. 



10. Forewings ochreous . . .13. iniacilenta. 



,, gi'ey . . . . 14. lota. 



11. Hindwings with termen pale reddish-ochreons 10. helvohi. 



grey . . .12. 



12. Forewings with black costal subterminal mark 11. litura. 



,, witliont such mai'k . . .13. 



13. Orbicular very narrow, oblique . . \'2. pistai^lua. 



,, not narrow . . . .14. 



14. Reniform forming a spot and two dots . 17. sdieN/tia. 



,, normal . . . . .15. 



15. Forewings ochreous . .9. chrelfaru. 



,, brown or grey . . . .16. 



IG. Subterminal line whitish . . .15. ypsi/on. 



„ „ hardly paler . .16. susjiecta. 



1. 0. xerampelina,//?^ 31-35 mm. Forewings orange-yellow; 

 first and second lines even, pale, lower f of median space and an 

 oblong projection from it between obsolete orbicular and reni- 

 form light purplish-fuscous; a light purplish-fuscous terminal 

 fascia, not reaching costa. Hindwings ochreous-whitish, more 

 ochreous-tinged posteriorly. 



Britain to Perth, N. and E. Ireland, rather local ; C. (except 

 EC.) Europe ; 9. Larva brown-grey, darker-freckled ; dorsal 

 line pale, irregular, darker-edged ; subdorsal and spiracular pale, 

 dark -edged above : on ash ; 10-6. The larva rests in the 

 crevices of the bark, which it resembles in coloui*. 



2. 0. croceago, F. 31-35 mm. Palpi long. Forewings 

 orange, mixed with ferruginous ; subbasal, first, and second lines 

 edged with grey dots sprinkled with black ; median and sub- 

 terminal lines grey sprinkled with black, median angulated 

 in middle; orbicular and reniform paler-edged. Hindwings 

 yellowish-white, slightly rosy -tinged ; discal spot and irivgular 

 postmedian line grey. 



Kent and Devon to Worcester, Leicester, York, E. Ireland, 

 local ; C. and SW. Europe ; 9-4. Larva pale orange-ochreous, 

 darker-fi-ockled ; brown dorsal V-shaped marks on 5-12; dorsal 

 and subdorsal lines paler, darker edged : on oak ; 5, 6. 



3. 0. citrago, L. 33-35 mm. Thoi-ax witli a pui-jilc dorsal 



