274 NOTODONTINA LIBERIA 



2. Larva green or brown ; dorsal line double, whitish ; sub- 

 dorsal whitish ; lateral and spiracular whitish, interrupted ; 

 sometimes a dorsal series of square brown marks alternating 

 with whitish : on hawthorn and blackthorn ; 4-6. 



14. PSODOS, Tr. 



Face with long rough hairs. Tongue developed. Antennae 

 in $ stout, shortly ciliated. Palpi with long projecting hairs. 

 Thorax roughly hairy beneath. Femora hairy ; posterior tibiae 

 in $ not dilated. Forewings in $ without fovea ; 10 absent, 

 11 anastomosing or connected with 12. Hind wings : 6 and 7 

 sometimes stalked. 



A small alpine genus, confined to the European mountains ; 

 correlated with Crocota. 



1. P. coracina, Esp. (trepidaria, Tr., non Hb.) 22-24 mm. 

 Head black. Forewings blackish -grey, much sprinkled with 

 whitish ; first and second lines rather curved, waved, blackish ; 

 subterminal obscurely whitish, waved ; a black discal spot. 

 Hindwings blackish-grey, posteriorly whitish-sprinkled ; mark- 

 ings as in forewings, but indistinct, first line absent. 



Perth to Ross, rather common; mountains of N. and C. 

 Europe ; 7. 



15. HYBERNIA, Latr. 



Face with appressed or short rough scales. Tongue de- 

 veloped or weak. Antennae in < bipectinated, pectinations 

 sometimes short and terminating in fascicles of cilia, apex 

 simple. Palpi shortly rough-scaled. Thorax with small 

 triangular anterior crest, hairy beneath. Femora glabrous ; 

 posterior tibiae in < not dilated. Forewings in $ without 

 fovea; 10 sometimes out of 9, sometimes anastomosing or 

 connected with 9, 11 sometimes out of 10, usually anasto- 

 mosing with or running into 12, rarely absent. $ apterous or 

 with rudimentary wings. 



A small genus, characteristic of the European region, though 

 stragglers occur elsewhere : the species all emerge in winter. 



1. Antennal pectinations short, ending in long fascicles 



4. defoliaria. 

 ,, moderate, normal . . 2. 



2. Second line of forewings twice sinuate 1. leucophaearia. 



once sinuate . . 3. 



3. Forewings ochreous-orange . . 3. aurantiaria. 



whitish-ochreous . . 2. marginaria. 



