176 LEPIDOPTERA. 



conspicuous yellow-white band, erect and complete ; cilia 

 white. Hind wings elongated, rounded behind ; black, with 

 a broad central curved yellow-white band ; cilia white, 

 preceded bj" a very slender white line. Female similar. 



Undersides of all the wings shining black, with a dull 

 yellowish cloud at the base of each, the white stripe of the 

 upper side very distinctly reproduced ; and a whitish cloud 

 along the dorsal margin of the fore pair ; cilia vfhite. Body 

 black ; legs brownish white, clouded with black. 



Usually not variable, except a little in size, and in the 

 very occasional appearance of the first line of the fore wings 

 as an additional yellow stripe ; but in the collection of the 

 late !Mr. F. Bond is a specimen in which the marginal 

 portion of each wing, from the band, is broadly white. 



On the wing in May, June, and sometimes July, and as a 

 second generation, in August. 



Larva spindle-shaped ; yellowish grey with glossy black 

 raised dots on which are small hairs ; head glossy yellow 

 spotted %vith darker ; dorsal plate similar. (Hofmann.) 



September, among the root leaves of Salvia pratcnsis, 

 usually those which lie flat upon the ground ; these it gnaws 

 from the underside, leaving the upper epidermis. Its web, 

 into which it escapes when disturbed, is generally found 

 near one of the Salvia leaves, among moss and dead leaves ; 

 in its neighbourhood there are nearly always large heaps of 

 black excrement. Rarely the larva, which is not very active, 

 is found on a higher leaf, which then is rather spun together. 

 It winters in a rather large grey-brown papery cocoon, and 

 changes to a pupa in the spring. (Carl von Heyden.) 



Pupa apparently undescribed. 



The moth flies in the sunshine, especialh* late in the after- 

 noon, about the short herbage, on chalk and limestone hills, 

 seaclifFs and sandhills, sometimes showing a partiality for 

 patches of wild thyme, upon which the larva is supposed by 



