40 STATE BOARD OF AGRICULTURE 



ACRONEURA Pict. 

 A. abnormis Newn. Newfoundland VI (Ds), Philadelphia 

 A. arida Hagen New York and Philadelphia 



ISOGENIUS Newn. 

 I. frontalis Newn. Canada, New York, Ohio. 



PERLA Geoff. ' 

 P. annulipes Hagen. Washington, D C. 

 P. ephyre Newn. New York to Georgia. 

 P. placida Hagen. Riverton VII ( Jn). 

 P. postica Wlk. Canada to Georgia. 

 P. similis Hagen. Pennsylvania and Maryland. 

 P. tristis Hagen Delaware Water Gap. VII, 3 (Ds). 

 P. xanthenes Newn. Pennsylvania to Georgia. 



PSETJDOPERLA McGilliv. 

 P. occipitalis Pict. New Brunswick IX, 19. 



CHLOROPERLA Pict. 



0. maculata Pict. Philadelphia. 



C. virginica Banks. Del. Water Gap VII ( Jn). 



ISOPTERYX Pict. 



1. cydippe Newn. New York to Georgia 



OAPNIA Pict. 

 C. necydaloides Pict. Staten Island, III (Ds). 

 C. pygtnaea Burrn. New York and Pennsylvania. 



' TiENIOPTERYX Pict. 

 T. fasciata Burm. Caldwell (Cr), Staten Island IV (Ds). 

 T. maura Pict. Philadelphia. 

 T. similis Hagen. Caldwell (Cr). 



NEMOURA Pict. 

 N. albidipennis Wlk. Canada to Virginia. 



LETJCTRA Pict. 

 L. tenuis Pict. Philadelphia. 



