NOTODONTID^. 137 



a branch, indeed it is occasionally shaken out of a tree by- 

 beating for larvae. Very widely distributed, the typical form 

 being found in woods and wooded districts, throughout the 

 Southern and South-Eastern Counties to Norfolk, where, in 

 the fens, the darker variety begins to appear. Westward, 

 however, the latter attains a far more southern distribution 

 since it is the dominant form in South Devon. On the other 

 hand, specimens having the typical colouring have been found 

 so far north as Cumberland ; and in one of these forms, or 

 both, with intermediates, the insect appears to occupy suit- 

 able districts throughout England, being almost common 

 in the mosses of Lancashire and Cheshire. Apparently 

 scarce in Wales, my only record being from near Swansea. 

 Not rare in Scotland. Said by Mr. Wm. Evans to have been 

 thirty years ago, quite common in the Edinburgh district 

 now far scarcer ; found also in Perthshire, Clydesdale, and in 

 other districts to Moray and Argyle. In Ireland widely 

 distributed — Wicklow, Sligo, Donegal and Londonderry. 

 Abroad it is found throughout Central Europe, and in 

 Sweden and Finland. 



8. N. bicolora. Hill. ; bicoloria, ^taud. Cat. — Expanse 

 1^ inch. Pure white ; fore wings with an orange dorsal blotch 

 edged with black. 



Antennae of the male regularly pectinated to near the tip, 

 where the teeth become extremely short ; light brown ; shaft 

 white. Head and thorax densely covered with raised, downy, 

 white scales of considerable length ; abdomen not very stout 

 white, with a yellowish band at the base, and a thick con- 

 verging white anal tuft. Fore wings rather broad and short ; 

 costa gently arched ; apex angulated ; hind margin strongly 

 but regularly curved ; dorsal margin roimded, and having in 

 the middle a rather long tuft of prominent scales — white 

 tipped with brown. Colour pure glistening white ; edge of 

 costa from the base smoky-black ; first line composed of three 

 or four disconnected black streaks in a perpendicular direction, 



