364 LEPIDOPTE'RA. 



vessel, so as to form two rather squared plates, sharply 

 defined and edged in front with white ; on the third segment 

 are two plates, the lower parts being narrowed ; on the 

 fourth the plates are less sharply defined and consist of two 

 indistinct spots ; on the remainder they are obliterated. 

 Living in a case which is a little constricted at the mouth, 

 but swells out in the middle and terminates in a blunt point. 

 It is covered with little fragments of bark of various shapes, 

 and placed irregularly. (Bruand.) 



July to May, on sallow and other bushes, feeding upon the 

 lichens on the bark. 



Pupa undescribed, in the larva-case. 



Very little indeed is known of this species in this country. 

 The rearing of two specimens, male and female, was recorded 

 in 1858. To these I have not access. Mr. Mitford states 

 that he found three cases, one of which produced a male, the 

 others females ; but unfortunately his specimens, which are 

 in Dr. Mason's collection, do not appear to belong to this 

 species. The male is certainly F. betulina. In Mr. Bond's 

 collection is a case which may be correct, but nothing 

 appears to have been reared from it. So little evidence is 

 there that my only excuse for including this species as 

 British is my own very distinct and accurate remembrance 

 of a specimen which was obtained more than twenty-five 

 years ago, by my early compa-nion, Mr. E. G. Baldwin. This 

 specimen, which I often examined, agreed exactly with 

 Bruand's figure. It was taken at the Bishop's Wood, Hamp- 

 stead, and, I think, in the i7iiago state, by Mr. Baldwin, who 

 is long since deceased. Unfortunately, this specimen cannot 

 now be traced ; I have tried in vain to discover what has 

 become of my old friend's collection. Under these circum- 

 stances it has been necessary to describe the species mainly 

 from Bruand's figure ; but I feel certain that the insect only 

 requires looking for in our southern woods. The only Con- 



