carsiaJ HYDRIOMENIDAE 201 



scaled. Forewings : areole double. Hindwiiigs in S with 

 transparent basal subdorsal spot, bordered beneath by short 

 membranous bladdeiy ridge, foi-ming small pocket on lower 

 surface ; 8 anastomosing with cell shortly beyond middle. 



The single species is closely correlated with Eucestia. 



1. 0. paludata, Tlmh. (imbutata, Hb.) 22-26 mm. Fore- 

 wings brown-grey, densely whitish-sprinkled, with faint darker 

 striae ; third and fourth fasciae sometimes brown, edges of 

 median band dark fuscous, anterior straight, posterior angulated 

 below costa and in middle, followed by a white line, angles sur- 

 rounded by a rosy-ochreous sufi'usion ; fifth fascia obscure, 

 rather dark fuscous, running to apex ; a, grey discal mark ; 

 cilia sharply barred. Hindwings pale grey, rosy-tinged. 



Warwick and Stafford to the Shetlands, common ; N. and 

 mountains of C. Europe, N. Asia, N. America ; 7. Larva 

 reddish -brown ; dorsal and subdorsal lines darker ; spiracular 

 yellow, marked with red spots, on 2 and 3 black-edged above ; 

 subspiracular black ; head dull pink : on Vaccinmm ; 5, 6. 



11. Calocalpe, Hb. 



Face with cone of scales. Antennae in $ ciliated. PaljDi 

 rough-scaled. Forewings : areole double. Hindwings in S 

 with deep dorsal fold beneath, containing large lateral hair- 

 tuft posteriorly ; 8 anastomosing with cell to beyond middle. 



A small genus, but extending throughout the northern 

 hemisphere and S. America ; derived from Hydriomena. 



Cilia white-spotted . . . .2. undulata. 



,, not white-marked . . .1. certata. 



1. C. certata, Hb. 37-40 mm. Forewings light ochreous- 

 bi-own, with darker or dark fuscous striae ; third and foiirth 

 fasciae darker, sometimes suffused with dark brown, fourth 

 obtusely angulated below costa and in middle ; subterminal 

 line obscurely whitish ; a black oblique discal mark. Hind- 

 wings light ochreous-brownish, with curved darker striae ; a 

 dark grey discal dot ; termen dentate. 



England to York, rather common ; C. Europe, WC. Asia to N. 

 Persia, Japan ; 5. Larva pinkish-grey, blue -grey, or ochreous ; 

 subdorsal and lateral lines whitish, formed of small streaks ; 

 S2:)iracular white, marked with orange spots ; head ochreous- 

 brown : on ]>erberis ; 6, 7. 



2. C. undulata, L. 28-32 mm. Forewings pale whitish- 

 ochreous, with sharp waved dark fuscous striae ; fasciae 

 brownish, sixth ochreous -brown ; two median striae partly 



