526 TORTBICINA [ACALLA 



before and beyond middle and one in middle of disc grey, 

 brownish, red -brown, or blackish. Hindwings whitish-grey, 

 towards apex darker or grey-strigulated. 



Britain to the Hebrides, Ireland, common ; N. and C. 

 Europe, N. America; 8-10. Larva pale green; dorsal line 

 darker ; head black or brown, plate of 2 more or less black : on 

 birch ; 6. There is said to be sometimes a partial early brood 

 of imagos in 6, perhaps from autumnal larvae. 



22. A. caledoniana, Stph. 13-1 5 inm. Forevvings suboblong, 

 dark ferruginous-fuscous, obscurely darker- strigulated ; tufts 

 slight ; central fascia and costal patch sometimes faintly in- 

 dicated. Hindwings grey. 



Kent, Dorset, Hereford to the Orkneys, common north- 

 wards ; not recognised elsewhere ; 7, 8. Larva on Alchemilla 

 alpina ; 6. 



23. A. aspersana, lib. 11-15 mm. Fore wings suboblong, 

 ochreous-yellowish to ferruginous, darker- strigulated ; tufts 

 slight ; base of costa usually ferruginous -suffused ; a spot on 

 dorsum at J, and a triangular paler -centred costal blotch 

 deeper ochreous, ferruginous, or mixed with dark grey. Hind- 

 wings pale grey, darker towards apex. 



Britain to Caledonian Canal, N. and E. Ireland, locally 

 plentiful ; C. Europe ; 7, 8. Larva green ; head light brown ; 

 plate of 2 brown or green, sometimes black-edged : on Spiraea, 

 Poterium, Potentilla, etc.; 5, 6. 



24. A. holmiana, L. 12-14 mm. Forewings suboblong, deep 

 orange -ferruginous, yellower towards dorsum anteriorly, suf- 

 fusedly streaked transversely with pale violet, sometimes mixed 

 posteriorly with whitish and blackish scales ; tufts absent ; a 

 triangular white often black-edged costal blotch beyond middle; 

 cilia ochreous-yellowish, on tornus dark grey. Hindwings grey, 

 darker posteriorly. 



Britain to the Clyde, N. Ireland, common ; C. Europe ; 7, 

 8. Larva yellowish ; head pale brown : on rose, apple, etc. ; 

 5,6. 



3. PHILEDONE, Hb. 



Antennae in $ bipectinated, pectinations sometimes very short 

 and terminating in fascicles of long cilia. Palpi moderately long, 

 porrected. Thorax smooth. Forewings without costal fold ; 7 

 and 8 stalked, 7 to termen. Hindwings : 3 and 4 approximated, 

 connate, stalked, or coincident, 5 somewhat approximated to 

 4, G and 7 approximated or stalked. 



