220 LEPIDOPTERA. 



rupted on the fore part of each segment by a reddish-brown 

 triangular mark ; this triangle is met on each side by a thick 

 black wedge-shaped mark, below which again comes the con- 

 tinuous bright yellowish-white subdorsal line ; this line is 

 thin on the thoracic segments, but beyond them widens in 

 such a manner that the widest part on each segment is near 

 the ends of the black wedges, and the whole line is finely 

 edged with black throughout ; the sides similar to the back, 

 but much obscured by dark red-brown freckles, and with a 

 short blackish streak slanting downwards on each segment ; 

 spiracles oval, black ; spiracular stripe yellowish-white, suf- 

 fused beneath each spiracle with red, and delicately freckled 

 with red along the middle ; undersurface and legs dark 

 purplish-brown. 



When young it has sixteen legs, but the first pair of pro- 

 legs is not serviceable, and that on the following segment is 

 smaller than those on the ninth and tenth ; as it grows this 

 pair increases to the size of the following, and before full 

 growth that on the seventh segment has also arrived at full 

 size. (Rev. J. Hellins.) 



End of June and July on Vaccinium vitis-idcea, V. myrtillus, 

 Arbutus uva-ursi, and in captivity on A. uncdo, Salixcaprcca, 

 S. acuminata, Polygonum, aviculare, Luzula pilosa, the blossoms 

 of Hclianthemum, vulgare, and probably many other low- 

 growing plants ; feeding at night, hiding by day underneath 

 the leaves of the food-plants. 



Pupa glossy black, the segmental divisions at first reddish ; 

 figure smooth and rounded ; the abdomen tapering off rather 

 quickly and ending in a blunt spike. (Hellins.) 



Having no personal acquaintance with this moth when 

 alive, I cannot do better than quote Mrs. Eraser's interesting- 

 remarks in the " Entomologists' Monthly Magazine " : " This 

 prettly little moth abounds on the tops of many of the Scot- 

 tish mountains. In Perthshire I have found it on every Ben 

 which I have ascended to the height of two thousand feet and 



