354 THOMAS SAY FOUNDATION 



PLATE 32. 

 Wings of Nemoura, Perlomyia and Leuetra. 



Fig. 1. Leuetra bradleyi Clsn. 



Fig. 2. Nemoura cinctipes Bks. 



Fig. 3. Nemoura piinctipennis Clsn. 



Fig. 4. Leuetra carolinensis Clsn. 



Fig. 5. Perlomyia utahensis sp. nov, 



Fig. 6. Nemoura depressa Bks. 



