6 Mr. E. Meyrick on the 



stage down to obsolescence is found, yet it indicates real 

 affinity, and can be employed in certain cases. The form 

 of the palpi does not offer much definite variation, and is 

 rarely of value. The structure of the antennse is prac- 

 tically almost identical throughout the family. The 

 possession of black scales in the cilia of the third seg- 

 ment of the hind wings is a good indication, and seems 

 on the whole to be a fairly reliable character, though it 

 cannot always be employed, and in some cases these 

 scales are very slightly developed. 



The following is a tabulation of, so far as I am aware, 

 all the genera known at present to exist ; I have omitted 

 Amhhjptilia, Hb., and Cnemidoiihorus, Wallgr., which I 

 consider not distinct from Platyptilia, Hb. : — 



