72 THE ENTOMOLOGIST. 



beyond a given point, in my collection are about ten extreme 

 aberrations. One female, light coloured, measures five lines 

 in expanse; another female, very light-coloured, measures 

 twelve lines; and another, brown, slightly irrorated with 

 whitish atoms, twelve lines ; one female, eleven lines, of a dark 

 brown colour, with the thorax, abdomen, and wings as far as 

 the centre, of a rich purple-brown, beyond a broad light fascia 

 containing a slight brown stria ; two small males, one rich 

 dark brown, and one reddish brown, irrorated with whitish 

 atoms ; one female in which the dark markings being larger 

 and more pronounced than usual, on a clear light ground, 

 gives the specimen a very peculiar appearance. These are 

 the results from many thousands examined. 



Anisopleryx sescularia. Does not vary much here: I have 

 only three which can be said to be marked varieties. 



Hybernia leucophearia. In a series of thirty-six specimens, 

 I have varieties from very light to deep rich brown, no two 

 specimens being exactly alite. 



H. progemmaria. Of this species I may say the same as of 

 H. leucophearia, except perhaps that the last four specimens 

 in the series are alike, being of a deep rich ochreous-brown. 

 The same remarks apply to the females : they vary from light 

 buff to dark brown. ^ 



H. defoliaria. Another variable species, which is repre- 

 sented in my collection by a long series of varieties. 



Phigalia pilosaria. The only aberration I have ever seen 

 in this species is in a small male obtained from Mr. Hodgkin- 

 son : the thorax and abdomen are of a deep umber-brown 

 colour ; the wings dark umber-gray, without markings : a very 

 peculiar insect. 



Nyssia hispidaria. Two specimens dark umber-brown. 



N. zonaria. Among the many thousands of this species 

 I have seen 1 have only been able to find about half-a-dozen 

 specimens worth calling varieties : one male nearly white 

 and one female nearly all dark brown are the best. One 

 gymnandromorphous specimen, the male on the right side, 

 fell to my lot on one occasion. 



Biston prodromaria. A light male, the rich deep brown 

 mayking replaced by rather bright red, and the under wings 

 very light, is the only variety of this species 1 have seen. 



B. betularia. In a row of twenty- four before me there are 



