XANTHORHOE] HYDRIOMENIDAE 229 



Britain to the Shetlands, Ireland, common ; N. and C. 

 Europe ; 6, 7. Larva dull green, sides paler ; dorsal and sub- 

 dorsal lines darker; spiracular edged with yellowish - white : 

 on Primula, Teucrivm, etc. ; 4, 5. 



8. X. spadicearia, Bkh. (ferrugaria, Hw.) 21-24 mm. Fore- 

 wings whitish-ochreous, with dark fuscous striae ; basal patch 

 carmine - purple ; second fascia ferruginous; median band 

 carmine-purple, dark-striated, whitish-edged, posterior edge pro- 

 jecting in middle ; a dark fuscous discal dot ; fifth fascia more 

 or less ferruginous, sixth greyish-ochreous ; sub terminal line 

 whitish, preceded by a small double dark fuscous spot above 

 middle. Hindwings grey, with pale and darker striae ; a dark 

 grey discal dot. Hook of genital prensor smooth-edged. 



Britain to the Hebrides, Ireland, very common ; N. and C. 

 Europe; 5, 6, 8. Larva pale greyish-ochreous, marked with 

 reddish-brown ; dorsal line dark brown, on 6-9 with a series of 

 four black spots in paler lozenges ; three lateral waved brown 

 lines ; subspiracular waved, brown, with five black spots : on 

 Nepeta glechoma, Galium, etc. ; 7, 9. 



9. X. ferrugata, L. (unidentaria, Hw.) 22-24 mm. Differs 

 from X. spadicearia as follows : forewings with basal patch 

 blackish-edged, median band almost always blackish, posterior 

 edge with stronger double prominence, discal mark linear, 

 black, subterminal line almost obsolete ; hook of genital 

 prensor serrate-edged. 



Britain to Argyll, N. Ireland, common ; N. and C. Europe, 

 N. Asia, N. America; 5, 6, 8. Larva resembling that of X. 

 spadicearia, and on same food-plants ; 7, 9. Abroad this species 

 has the median band as often reddish-purple as blackish. 



10. X. designata, Rott. (propugnata, F.) 22-25 mm. An- 

 tennal pectinations very short. Forewings pale greyish-ochreous, 

 sometimes whitish-mixed, with indistinct dark fuscous striae ; 

 basal patch brown-reddish, edge blackish, curved ; median band 

 reddish-fuscous, dark-striated, sometimes very narrow, anterior 

 edge and upper half of posterior suffused with blackish-fuscous, 

 posterior prominent below costa and angulated in middle ; a 

 dark fuscous discal dot ; subterminal line pale, preceded by a 

 reddish-fuscous costal spot. Hindwings greyish, with pale and 

 darker striae ; a darker discal dot. 



Britain to Ross, N. Ireland, common ; N. and C. Europe, N. 

 Asia, N. America ; 5, 6, 8. Larva brownish-ochreous, suffused 

 with dark fuscous ; dorsal line darker, with a series of blackish 

 spots preceded by variable pale marks ; subdorsal and lateral 



