314 THOMAS SAY FOUNDATION 



PLATE 12. 

 Wings of Perla and Clioperla. 



Fig. 1. Perla modesta Bks. 



Fig. 2. . Perla alameda sp. nov. 



Fig. 3. Clioperla clio Newm. 



Fig. 4. Perla sorpta sp. nov. 



Fig. 5. Clioperla annecta sp. nov. 



Fig. 6. Perla innubila sp. nov. 



Fig. 7. Perla fugitans sp. nov. 



Fig. 8. Perla luetuosa Bks. 



