LARENTIDM—EUPITHECIA. 89 



spot obscure, smoky-black ; cilia ashy-grey. Female 

 similar. 



Underside pale brown, or ashy-brown ; the fore wings 

 faintly crossed by two slender brown lines, and one broader ; 

 hind wings dusted with brown ; central spot minute, black ; 

 followed by a slender, dotted, curved brown line, and this by 

 a more distinct brown band. Hind margins all edged with 

 black lines. Body and legs brown. 



Singularly subject to climatal variation. A common and 

 well known form, which was at one time supposed to be a 

 distinct species, under the name of -E". ralhuinria, is found in 

 plenty in Scotland and the north of England, frequenting 

 heaths, and being in fact very much commoner than the 

 t}"pical form, which often occurs along with it. In this 

 variety the fore wings are sharper, more trigonate and 

 narrower, the colour is pale brown or pale greyish brown, 

 and the markings are formed more into narrow darker trans- 

 verse bands. Altogether it looks very like a distinct species, 

 but intermediates are frequent, especially in the North of 

 Ireland ; moreover, the Rev. H. H. Crewe reared the more 

 typical southern form from eggs laid by this variety, the larvfe 

 having fed upon garden flowers in the South of England. A 

 still more remarkable climatal variety is that found commonly 

 in the Shetland Isles, and also at one time recorded as a 

 distinct species under the name of E. curzoni. This form is 

 exceedingly jDretty, greyish white with sharp and distinct 

 lines, often becoming bands, of mottled blackish-grey or 

 black, the central band often well formed — of two stripes 

 enclosing a pale one and a small black discal spot — usually 

 with an additional stripe beyond, but sometimes having the 

 remainder of the wing pale and this central band alone 

 conspicuous. Intermediate forms, uniting this perfectly with 

 the var. callunnria, are found in Perthshire and Sutherland- 

 shire, and in the North of Ireland. 



Perhaps the most remarkable form of this species known, 

 however, is that specimen which was reared many years ago 



