806 NOTODONTINA [drymonia 



mark narrower and much more elongate, brown with w'hite 

 margins; hindwings clear whitish, dorsally oehrcous-tinged, 

 tornal suffusion including a wliitish terminal mark. 



Britain to Ross, N. and E. Ireland, rather common ; N. and 

 C. Europe ; 5-8. Larva green or brown, sometimes with darker 

 transverse markings; a prominence on 12; spiracular lino 

 yellow, in brown specimens usually obsolete : on poplar, Salix, 

 and alder ; 7-9. 



3. D. trepida, Esp. 50-60 mm. Forewings pale greyish - 

 oehreous, densely sprinkled with dark grey, anteriorly yellowish- 

 tinged ; subbasal and first lines blackish, dentate ; second 

 waved, grey, posteriorly pale-edged, extremities blackish, fol- 

 lowed by two longitudinal dark fuscous lines beneath costa ; an 

 ochreous-fuscous pale-edged discal mark, joined to costa by a 

 dark grey mark ; a praesubterminal series of dark fuscous palc- 

 edged marks. Hindwings oehreous-whitish, base more oehreous, 

 apex grey-suffused. 



Britain to the Clyde, E. Ireland, not common ; C. Europe ; 

 5. Larva reposing with both extremities raised ; green ; dorsal 

 line double, yellowish ; subdorsal yellowish, less distinct ; seven 

 oblique lateral streaks, upper half red, lower yellow ; yellowish 

 lateral blotches on 2 and 3 : on oak ; 6, 7. 



4. D. trimacula, Msp. (dodonaea, Hb.) 36-40 mm. Forewings 

 whitish, suffused with light fuscous; subbasal line dark fuscous; 

 a dark fuscous suffusion near before first line, not reaching costa; 

 first line dark fuscous, followed by a rather dark fuscous band, 

 beyond which is a rather broad clear whitish sometimes dark- 

 sprinkled fascia including the dark fuscous second line, and 

 suffusedly edged with dark fuscous ; cilia distinctly barred. 

 Hindwings pale fuscous, with two suffused darker fasciae. 



Britain to the Clyde, S. Ireland, not common ; WC. Europe ; 

 5, 6. Larva green ; dorsal line double, yellowish ; subdorsal 

 yellowish ; spiracular yellow, more or less red-marked : on oak; 

 7-9. 



5. D. chaonia, lib. 36-40 mm. Forewings fuscous, rather 

 darker anteriorly ; lines dark fuscous, subbasal -whitish-edged ; 

 first whitish -edged anteriorly, second waved, preceded by a 

 whitish sometimes interrupted fascia and whitish-edged pos- 

 teriorly ; a dark fuscous discal mark ; subterminal line obscurely 

 wliitish. liindwings light fuscous, with traces of paler fasciae. 



Britain to the Clyde, E. and S. Ireland, not common ; C. 

 Europe ; 5. Larva green ; subdorsal and spiracular lines 

 yellow : on oak ; 6-8. 



