128 LEPIDOPTERA. 



indebted for this singularly interesting addition to our Ptero- 

 phorina. Mr. de Grey was fortunate enough to capture 

 two examples in Norfolk, near Thetford, last July. " 



I bring this insect forward as Icetus with some slight hesi- 

 tation, because, though the specimens agree well with types 

 from Professor Zeller, in my friend Mr. Stainton's collec- 

 tion, and also with one sent to me some year or two ago by 

 Dr. Staudinger; the latter gentleman, to whom I have 

 submitted one of the plumes in question, writes me that it 

 seems to him to be rather " distans than Icetus/' but adds, 

 disfans and Icstus approach one another so closely, that very 

 probably they form but one species. At any rate, Mr. De 

 Grey's plume is a grand addition to the British list. 



