60 CARADRININA [ORTHOSIA 



7. Hindwinga whitish . . . 8.- 



grey . . . . 9. 



8. Hindwings ochreous-tinged . . 7. gilvago. 



not ochreous-tinged . . 8. ocellaris. 



9. Fore wings with subterminal line nearly straight . 10. 



,, not nearly straight 11. 



10. Forewings ochreous . . .13. macilenta. 



grey . . . . 14. lota. 



11. Hindwings with termen pale reddish-ocbreous 10. helvola. 



grey . . .12. 



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



without such mark . . .13. 



13. Orbicular very narrow, oblique . . 12. pistacina. 



not narrow . . . .14. 



14. Reniform forming a spot and two dots . 17. satellitia. 



normal ..... 15. 



15. Forewings ochreous . . 9. circellaris. 



,, brown or grey . . . .16. 



16. Subterminal line whitish . . .15. yi^ilon. 



hardly paler . .16. suspecta. 



1. 0. xerampelina,.//6.31-35 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 colour. 



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 irregular 

 postmedian line grey. 



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

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

 darker-freckled ; 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. Thorax with a purple dorsal 



