182 Ittrnors Natura History Survey BULLETIN Vol. 26, Art. 1 
A 
PERSIMPLEX 
DIABASIA 
366 
MARGINALIS PATOKA 
INCONSPICUA 
RUSTICALIS 
CRUENTATA 
372 
LUCIDIPENNIS PERFIDA UMBRATICA 
Fig. 363.—Heptagenia persimplex, male geni- Fig. 369.—Heptagenia cruentata, male geni- 
talia. talia. 
Fig. 364.—Heptagenia diabasia, male genitalia. Fig. 370.—Heptagenia rusticalis, male gemi- — 
Fig. 365.—Heptagenia pulla, male Senitalia. talia. sat , 
Fig. 366.—Heptagenia marginalis, male geni- Fig. 371.—Heptagenia inconspicua, male gen- 
talia. italia. 
Fig. 367.—Heptagenia patoka, male genitalia. Fig. 372.—He ptagenia lucidipennis, male gen- 
Fig. 368.—Heptagenia flavescens, male geni- _ italia. 
talia. Fig. 373.—Heptagenia perfida, male genitalia. 
Fig. 374.—Heptagenia umbratica, male genitalia. 
