LARENTID.E—PHIBALAPTEKYX. 343 



Lakva cylindrical, transversely wrinkled, more especially 

 so towards the extremities, the skin raised to a ridge on each 

 side ; bead rather flat and protruded, as wide as the second 

 segment, grey-brown with a brown stripe down the inner 

 edge of each lobe ; body dark grey-brown, paler behind ; 

 dorsal stripe narrow, black, interrupted or attenuated, 

 thickened on every segment and forming a deep black 

 spot at many of the divisions ; subdorsal lines slender, dark 

 brown ; the lateral ridge paler brown, much da])pled and 

 edged, both above and below, with black-brown ; undersurt'ace 

 dark brown, with a black-brown median stripe which is inter- 

 sected by a pale stri^De ; legs and prolegs dark brown. 



June and July, and a second generation in September and 

 October ; on Clciiiatis vitalha (traveller's joy), feeding prin- 

 cipally at night. 



Pupa rather short, eye-covers somewhat full, limb-covers 

 well marked, and rather wrinkled with shallow sculpture of fine 

 incised lines ; wing-covers thickened at the edges, thickly 

 covered with similar fine sculpture ; dorsal and abdominal 

 segments coarsely pitted, and the latter rather strongly 

 ridged ; anal segment especially thickened ; cremaster a stout 

 conical knob bearing a pair of fine divergent spil^es ; colour 

 pitchy-brown, eye-covers and cremaster black, abdominal 

 divisions chestnut-brown. In a slight cocoon of silk and 

 earth in the ground. 



In this condition through the winter. 



The moth hides during the day among its food-plant, the 

 common wild clematis, in hedges, and on steep banks, and 

 readily Hies out at the stroke of the beating-stick. At dusk 

 it Hies about the same jilaces, and more especially in lanes, 

 but from its sombre colouring is not very distinctly to be seen 

 when ilying, except in the earliest dusk. After dark it will 

 sometimes visit street lamps or any other available strong 

 light. It is mainly, if not entii-ely, confined to chalk districts, 

 or those in which chalk forms so considerable a portion of the 



