PYRAUSTID.^—BOTYS. 207 



these is a dotted yellow curved transverse line ; cilia shining 

 black-brown. Female similar. 



Underside of the fore wings a repetition of the upper, but 

 rather paler, and the vellow-white markings a little ex- 

 panded ; in the hind wings these pale markings, with the 

 addition of a large basal yellowish blotch, almost absorb the 

 whole area. Body as on the upper side ; legs yellowish- 

 white. 



A little variable in the size of the pale spots on the upper 

 surfaces. On the wing in June, July and August, in one 

 generation. 



Larva rather spindle-shaped, and having the appearance 

 as though stretched ; anal prolegs extended ; head also 

 somewhat so, rounded and flattened, semi-translucent, white, 

 antennal papillae distinctly noticeable ; general colour whitish- 

 green ; dorsal stripe dark gi'een, edged on either side with 

 cloudy white, which, however, is interrupted and shaded to 

 green on every segment ; below the subdorsal line the whole 

 surface is paler green, shading still paler below, except that 

 a faintly darker spot appears at the sides of the third seg- 

 ment ; raised dots white ; legs, ventral prolegs, and also 

 the whole extended anal prolegs semi-transparent white. 



August and September on elder {^Sambucas clulics and 

 8. niger), feeding on the leaves ; living extended on their 

 undersides, where it draws the portion between two side-ribs 

 into a hollow, in which it remains covered by a broad trans- 

 parent shining white web. 



Pupa light brown ; not moi-e fully described ; in a silken 

 cocoon among fallen leaves or on the bark of the tree ; the 

 winter being passed in this cocoon, as a larva, and pupation 

 taking place in the spring. 



The moth sits during the day on the undersides of the 

 leaves of its food-plant, the common elder, and is easily 

 shaken or beaten out, when it tiies lazily to a similar hiding- 



