86 THE ENTOMOLOGIST. 



scales, giving the insect a much darker appearance than the 

 type. The variety figured in Newman's * British Moths,' p. 257, 

 fig. 4, appears identical with my specimen of this form, which 

 also came from the Bradford district. 



5". var. scotica, mihi. — Larger and brighter than the type, the 

 markings very clear and distinct. All my Scotch specimens 

 from the Glasgow and Dumbarton district are much larger, 

 brighter, and more distinctly marked than Yorkshire specimens. 

 The specimens from the east coast of Scotland are more like 

 English, than Scotch specimens from the west coast, or from the 

 Eannoch and surrounding districts. It may be well to remark here, 

 that the fauna of the east coast, appears to be less alpine than 

 that of the west coast of Scotland in a more southern latitude. 



I may add that a great deal of variation occurs in the size, 

 colour and completeness of the discoidal spots in the specimens 

 of this species; very few specimens appear to be identical in 

 these respects. 



Acro7iycta, Och., eujjhorhice, Fb. 



Var. myricce. Gn.- — The type of this species {ewphorhice) does 

 not occur in Britain. The Continental specimens are very much 

 paler and generally somewhat smaller than our specimens. 

 Myric(e was long considered a distinct species, and was described 

 as such by Guenee, but there is no doubt that it is only one of 

 those highly specialised melanic forms, for which the northern 

 part of Britain and the western coast of Ireland are so remarkable. 

 It is useless to redescribe a species which is in all our collections 

 and has been so often described. Guenee describes a variety of 

 euphorhice, under the name of montivaga, as follows : — 



" The anterior wings of a deep slaty grey, with a slight tinge 

 of bluish white, the markings almost absorbed in the ground 

 colour ; thorax grey. The inferior wings of the male a little 

 powdered with black on the outer edge, the nervures and a 

 distinct cellular lunule darker ; those of the female of a darker 

 grey with the fringe white. The anterior wings of the female 

 not differing from those of the male. The variety is constant ; 

 perhaps it is due to the influence of the mountains. Locality, 

 Chamouni." (Guenee, ' Histoire naturelle des Insectes,' vol. v., 

 pp. 57, 58). 



There is no doubt that these varieties {myricce and montivaga) 

 are identical. The specimens of montivaga I have received from 



