336 



THE CANADIAN ENTOMOLOGIST. 



Perla luctuosa^ n. sp. — Head rather orange-yellow, a large black spot 

 covering ocelli, a transverse dark spot on clypeus, posterior angles of head 



r 



Fig. 45 — 



1. Perlomyia collaris, fore wing. 



2. Isoperla loiiyiseta, ventral plate. 



3. Acroneuria pumila, ventral plate. 



4. Perla luctuosa, ventral plate. 



5. Isoperla sordida, ventral plate. 



6. 7, 8. Genitalia of Leiictra grandis, 



