oahsiaJ HYDRIOMENIDAE 201 



scaled. Forowings : areole double. Hindwings in 3 with 

 transparent basal subdorsal spot, bordered beneath by short 

 membranous bladdery ridge, forming small pocket on lower 

 surface ; 8 anastomosing with cell shortly beyond middle. 



The single species is closely correlated with Eucestia. 



1. C. paludata, Thnh. (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 suffusion; 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 Vacciniwn ; 5, 6. 



11. Calocalpe, Hb. 



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

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

 with deep dorsal fold beneath, containing large lateral hair- 

 tuft posteriorly ; 8 anastomosing with cell to beyond middle. 



A smell genus, but extending throughout the northern 

 hemisphere and S. America ; derived from Hydriomena. 



Cilia white-spotted . . . .2. undnlata. 



„ not white-marked . . . I. certata. 



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

 brown, with darker or dark fuscous striae ; third and fourth 

 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 ochrcous-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; 

 spiracular white, marked with orange spots ; head oehrcous- 

 brown : on Berberis ; 6, 7. 



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

 oohreous, with sharp waved dark fuscous striae ; fasciae 

 brownish, sixth ochreous-brown ; two median striae partly 



