148 I.EI'IDOPTERA. 



clouded and intersected with snuikv-black. Hind wings 

 somewhat elongated, rather rounded behind, yet showing a 

 faint elbow in the hind margin, smoky-white ; central spot 

 faintl\- black; nervures tinged with darker smoke colour ; 

 a veiy faint slender white line crosses the middle of the 

 wing ; lieyond this the wliole area is rather more darkij^ 

 tinged with smoke colour divided b\- paler transverse lines, 

 that nearest the hind margin being distinctly scalloped ; 

 extreme hind margin edged with l)lack streaks ; cilia smoky- 

 white. Female similar, but with simple antennas. 



Underside of the fore wings rather dark smoky-brown : 

 the dark blotch of the upper side more blaclcened. but 

 followed by a yellowish shade ; the smoke colour of the hind 

 margin broken by the slender scalloped white subterminal 

 line, here reproduced. Hind wings white, dusted with 

 smoky -grey ; central spot distinctly black ; central line 

 edged by black streaks on the nervures ; hind-marginal 

 region shaded by cloudy-grey lines. Body and legs smoky- 

 white ; tarsi black-brown, barred with white. 



Exceedingly varialile, but mainly upon the lines already 

 indicated, in the colour of the central band or blotch, from 

 black-brown to black or grey-black, its extent as a costal 

 large or small blotch, or a complete baud, and in the latter 

 case in the width of its dorsal portion, in some specimens 

 one half the breadth of the costal portion, in others narrow- 

 ing to little more than a double thread. Others again have 

 a com])lete break in this band, the broad costal blotch being 

 faced by a smaller one upon the dorsal margin ; this form, 

 where the division is annphtc, is rare, but a [mrtwl obscura- 

 tion of the lower portion of the band is common. A form in 

 which the bar.d is represented only by tlie costal blotch, and 

 this blotch is reduced to a small ovate black spot, found 

 occasionally in the London district and elsewhere in the 

 South, was named ciisturiitii by Hawortli. as a distinct 

 species Another, from having almost a larger white area. 

 has the costal blotch reduced to a narrow sharp pointed 



