LA REN T/Lh-E—LAREN TIA . 1 83 



margins dotted with black ; cilia white, clouded with smoky- 

 brown. Female similar. 



Underside of the fore wings uniformly shining smoky- 

 grey, except two yellowish stripes along the costa, and a 

 similar striga across the apes ; cilia dashed with white. Hind 

 wings white with two faint grey-brown curved transverse 

 lines; central spot black. Body brownish-white ; legs grey 

 spotted with white. 



Variable in the depth of the ground colour, and in the 

 extent and blackness of the rip])led trausverse liues ; also in 

 the central band, which in some specimens is black, in others 

 opened by a middle grey stripe or series of loops. Blacken- 

 ing of the general surface through the broadening and darken- 

 ing of all the lines also is frequent. These variations do 

 not appear to be local, but the darkest forms seem to accom- 

 pany the paler ; though some Shetland examples have a 

 particularly pretty pale grey ground colour with black 

 stripes, and others are almost uniformly black. One taken 

 in Unst by Mr. F. J. Hanbury is pale silvery grey with 

 six beautifully slender stripes. One of the most beautiful 

 forms is that in which a complete pale grey stripe down the 

 middle of the central band accords with similar pale 

 stripes of the ground colour ; another is where the pale grey 

 ground colour is not rippled with dark lines, but clear and 

 shining, showing up the dark bands. Occasionally, but 

 rather rai-ely, the central band is abbreviated, reaching only 

 from the costa to the middle of the wing, with or without 

 broken indications of the remaining portion ; in other rare 

 cases the almost uniformly blackened fore wings have the 

 subterminal line sharply white and contrasting. In the collec- 

 tion of the late Mr. H. Doubleday is a specimen of a blackish 

 colour beautifully rayed with white. Lastly, specimens 

 from North Wales seem to show a faint tinge of green, and 

 are otherwise dull and shaded off. 



On the wing from June till the beginning of August ; 

 apparently only in one generation. 



