284 NOTODONTINA [HYGROCHKOA 



1. H. syringaria, L. 34-38 mm. Head light brownish. 

 Forewings deep ochreous, suffused with deep yellow towards 

 middle of termen ; first and second lines whitish-purple, angu- 

 lated, dilated on costa, second black towards middle ; median 

 ferruginous or partly black, sharply angulated ; subterminal 

 whitish -purple towards costa ; termeu somewhat projecting on 

 6. Hindwings deep ochreous ; median line ferruginous or 

 blackish, straight; second purple -whitish, nearly straight, 

 black-dotted on lower half ; termen dentate. 



England, rather common ; N. and C. Europe, N. Asia ; 7. 

 Larva dark grey, marked with pale and dark brown ; subdorsal 

 line double, pale ochreous, interrupted ; 6, 7 with pairs of 

 projections; 8 with two long horns curved backwards; head 

 brown : on ash, Ligustrum, Lonicera ; 9-6. 



24. CEPPHIS, Hb. 



Face loosely scaled. Tongue developed. Antennae in $ 

 bipectinated to apex. Palpi rough - scaled. Thorax hairy 

 beneath. Femora glabrous ; posterior tibiae in $ not dilated. 

 Forewings in $ without fovea; 7 and 8 unusually short, 7 

 rising above middle of 9, 10 out of 9. 



There is only one species ; it is correlated to the two 

 preceding genera. 



1. 0. advenaria, Hb. 26-29 mm. Head whitish -yellow, 

 mixed with fuscous. Forewings ochreous - whitish, much 

 sprinkled with fuscous; costa yellowish; first line curved, 

 second sinuate or subangulated, fuscous ; praesubterminal 

 suffusedly darker; a fuscous discal mark. Hindwings as 

 forewings, but first line absent, discal dot blackish. 



S. England to Stafford and Cambridge, local ; C. Europe, 

 WC. and N. Asia, Japan ; 6. Larva dark brown, marked with 

 pale ochreous ; a double series of black spots ; 5-8 with pale 

 heart-shaped blotches : on Salix, Vaccinium, Rubus ; 7, 8. 



25. COLOTOIS, Hb. 



Face roughly hairy, with a tuft from beneath antennae 

 across eye to middle. Tongue short. Antennae in $ very 

 strongly bipectinated to apex. Palpi very short, rough-haired. 

 Thorax densely hairy above and beneath. Femora densely 

 hairy; posterior tibiae in $ not dilated, spurs short. Fore- 

 wings in $ without fovea ; 10 sometimes anastomosing or con- 

 nected with 9, 11 anastomosing or connected with 12 and 10. 



Also confined to a single species. 



