EUCOSMA] EPIBLEMIDAE 461 



3. E. semifasciana, Jfw. 17-20 mm. Head and thorax grey. 

 Forewings grey, closely striated with whitish ; basal patch and 

 a subtriangular central costal blotch fuscous, black-marked, 

 apex of blotch truncate, marked with a black dash ; costa 

 posteriorly fuscous-spotted ; a darker black-dotted subterminal 

 mark in middle. Hind wings grey, darker posteriorly. 



England, local ; C. Europe ; 7. Larva green ; dorsal and 

 subdorsal lines darker ; head and plate of 2 yellowish-green : 

 on Salix caprea ; 5, 6. 



4. E. hartmanniana, L. (scriptana, Hb.) 17-19 mm. Head 

 and thorax grey. Forewings whitish, strigulated and in- 

 distinctly striated with fuscous, dorsum suffuscdly fuscous ; 

 edge of basal patch forming an indistinct darker black-marked 

 fascia, appearing sharply angulated below middle : central 

 fascia darker, black - marked, most distinct on upper half, 

 marked with a black median dash and obscurely interrupted 

 below this ; some black dots towards termen in middle. Hind- 

 \\ in-s urey, darker posteriorly. 



England to York, local ; C. Europe, N. America ; 7. Larva 

 light green ; head brown : on Salix alba and S. fragilis ; 5. 



5. E. corticana, Hb. (picana, Frol.) 18-21 mm. Forewings 

 white, margins strigulated with dark fuscous; edge of basal 

 patch, an irregular dorsal streak, and central fascia with 

 anterior edge strongly projecting in middle to touch basal 

 patch dark brown, irrorated with ashy -whitish and marked 

 with black, fascia with a black median dash. Hind wings grey, 

 darker posteriorly. 



Britain to Ross, local ; C. Europe ; 7. Larva light green ; 

 head greenish : on birch ; 5. 



6. E. betuletana, Hw. 17-21 mm. Forewings white, 

 sometimes partly ochreous - tinged, with some grey striae 

 posteriorly ; basal patch and central fascia dark brown, black- 

 marked, included space dark ashy-fuscous, all slightly whitish- 

 sprinkled, on fold sometimes more mixed with white; posterior 

 edge of fascia nearly straight, followed in middle by a faint 

 pinkish-ochreous tinge. Hind wings grey, darker posteriorly. 



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

 8. Larva green, incisions yellowish ; dorsal and subdorsal lines 

 grey-green ; tubercular spots yellow ; head yellow-green ; plate 

 of 2 pale green : on birch ; 5, 6. 



7. E. capreana, Hb. 17-21 mm. Forewings white, some- 

 times ochreous - tinged, with some partly faint grey striae 

 posteriorly ; basal patch, central fascia, and included space 



