216 NOTODONTINA [HYDRIOMENA 



median subterminal crescent. Hindwings light ochreous-grey, 

 with faint reddish-grey striae ; a dark grey discal dot. 



Britain to Caledonian Canal, Ireland, common ; C. Europe, 

 NW. Asia; 3, 4. Larva green, dark olive-green, pale brown, 

 or purplish ; dots white, conspicuous ; incisions often yellow ; 

 spiracular line yellowish, spiracles black ; head orange or pale 

 brown, with two dark spots : on rose ; 5-7. 



21. H. nigrofasciaria, Gz. (derivata, Bkh.) 27-30 mm. Fore- 

 wings dull purplish ; basal area mixed with ochreous, white, 

 and black ; edge of basal patch double, blackish, curved ; 

 median band formed by two fasciae enclosing a whitish-suffused 

 space, anterior fuscous, black-striated, posterior formed of three 

 indistinct striae, acutely angulated in middle, so as nearly to 

 reach termen, forming a dark fuscous costal spot, upper half of 

 third blackish ; a blackish discal dot. Hindwings grey, ter- 

 minally purplish ; a darker discal dot and two angulated striae. 



Britain to Caledonian Canal, E. Ireland, common ; C. Europe, 

 W. Asia ; 4, 5. Larva slender, pale-green ; a long triangular 

 mark behind head, a series of five dorsal diamonds, a transverse 

 bar on 10, a dorsal line posteriorly, and a spot on 13 purple-red: 

 on rose ; 6, 7. 



22. H. rubidata, F. 23-28 mm. Forewings brown-reddish ; 

 basal patch dark brown, blackish-striated, edge curved ; median 

 band formed by dark-striated fasciae enclosing a light fuscous 

 space, anterior, and upper half of posterior edge blackish - 

 fuscous, lower half of posterior dentate-waved ; a black discal 

 mark. Hindwings grey, terminally reddish-tinged, with darker 

 striae and discal dot. 



England, Arran, rather local ; C. Europe, WC. and N. Asia ; 

 6. Larva slender, whitish-ochreous, pale brown, or reddish, 

 with light and dark markings ; dorsal line dark, forming a 

 V-shaped mark behind head, and interrupted on 5-9 by light 

 reddish-centred arrowheads : on Galium ; 7-9. 



23. H. berberata, Schiff. 24-27 mm. Forewings ochreous- 

 brownish mixed with pale greyish-ochreous, with dark fuscous 

 striae ; edge of basal patch blackish-fuscous, slightly angulated 

 near costa ; median band formed by brown dark-striated fasciae 

 enclosing a pale ochreous-greyish space, anterior, and upper half 

 of posterior edge blackish- fuscous, posterior waved, acutely 

 projecting above and in middle ; sometimes a grey discal dot ; 

 a blackish -fuscous apical streak. Hindwings ochreous-grey, 

 with darker discal dot and posterior striae. 



Essex to Norfolk, Worcester, York, local ; C. Europe, WC. 



