292 LEPIDOPTERA. 



golden-Iji'owu liae ; cilia shining brownish-white. Female 

 much larger, with the abdomen stouter, shorter, and more 

 pointed. 



Undersides of all the wings as on the upper, except that 

 the golden-brown ground colour of the fore wings, and the 

 markings of the hind, are richer and darker. Body and legs 

 pale golden brown, shaded with white. The hind legs 

 longer than the body. 



Variable in both sexes in depth of the brown colour, or in 

 clearness of the white spots ; the latter sometimes obscured 

 by a suffusion of brown colour, or darkened till the fore wings 

 become almost uniformly brown, and the hind wings still 

 darker with the spots brown. This last form is more 

 particularly noticeable in specimens from the Fen districts, 

 and from the same districts occasional specimens are ob- 

 tained having both fore and hind wings broadly and irregu- 

 larly banded with white, the usual central markings being 

 obliterated. Similar forms are sometimes taken in Ireland. 



On the wing from June till September, probably in one 

 generation. 



Larva rather stout in proportion, thickest in the middle 

 and tapering rather suddenly toward each end ; head small, 

 light olive-brown, the lobes and mouth darker brown ; dorsal 

 plate pale olive, shining, margined in fi-ont with a fine black 

 line, and within it, after an interspace of the pale ground, 

 there is in the middle a transverse fusiform brownish-black 

 mark, dorsally divided by a thin pale line; the rest of the 

 body above light olive-brown with a darker dorsal stripe, and 

 fainter indications of a subdorsal stripe less dark ; the body 

 beneath much paler, light buff, very faintly tinged with 

 olive ; spiracles small, roundish oval, delicately outlined with 

 reddish-brown ; anterior legs well developed, but the ventral 

 and anal prolegs mere fleshy swellings, witli a flat process at 

 the extremity, fringed with fine dark brown hooks; the 

 whole skin soft and velvety, appearing darker in the depths 



