148 
Lilie 
179-180 
181-182 
183-184 
THOMAS SAY FOUNDATION 
PLATE 12 
FIGURES 177-184 
Pteronarcella badia Hag. 
177. Male 
178. Female 
Pteronarcella regularis Hag. 
179. Male 
180. Female 
Perlodes signata Banks. 
181. Male 
182. Female 
Peltoperla areuata Ndm. 
183. Male 
184. Female 
