422 
Psyche 
[September-December 
Fig. 6. Subcosto-cubital plate of ephemeropteron, Siphlonurus mirus 
(Siphlonuridae) . A. Fore wing; B. Hind wing. Original. Anb — anal 
brace; API — anal plate; bg — basal groove; Cb — costal brace; ScCuPl 
— ^subcosto-cubital plate; tf — transverse furrow. Recent. 
