I02 I.EPIDOPTERA. 



shades almost to tlie first line : this last is also black, 

 faintly curved, and a little irregular; second line slightly 

 more oblique, projecting outwards just above the middle 

 into a blunt angle above and below which is a hollow ; these 

 lines are black and enclose a black -brown central baud which 

 contains two blacker lines parallel with its sides, and a 

 deep black discal spot ; following this band is a narrow stripe 

 of the white ground colour neatly intersected by a fine line 

 of minute grey clouds or grey dots ; hind marginal region 

 broadly filled up by a smoky-grey band, through which 

 passes the subterminal line, pure white and an-anged in dots 

 or small curves and ripples, but often edged in its upper 

 portion, inwardly, by small black clouds; through it a white 

 dash runs obliquely into the apex of the wings ; cilia pale 

 grey-brown or whitish-brown, spotted with dark brown. 

 Hind wings rather long, rounded behind, and faintly 

 crenulated : clouded from the base to the middle with grey 

 transverse lines which fade out toward the costal edge ; the 

 line in the middle of the wing somewhat emphasised on 

 the nervures ; following this is a very slender grey line 

 not always distinct i and this is followed by a double sub- 

 marginal band of grey-brown clouding divided by a sharply 

 white rippled line ; central spot a black dot : cilia pale 

 smoky-brown, tipped with white. Female quite similar. 



Undersides of all the wings white, the markings as above, 

 except that those before the middle of the fore wings are 

 paler, and that the whole are cut ofl' on these wings by a 

 white stripe along the dorsal margin. ]5ody whitish-brown ; 

 legs grey-brown. 



Variable in the width of the central dark band, and 

 in the e.xtent to which the remaining area is occupied 

 by dark markings. In the north of Ireland there seems 

 to be a local tendency toward narrowing of these dark 

 markings and increase of the width of the white band. 

 This last peculiarity is emphasised sometimes by the faintness 

 of the intersecting dark line, the insect then closely 



