THE CANADIAN ENTOMOLOGIST. 



201 



H. vicar ins Walk, 



Is a large dark species, with deeply-marked venation, and the tips of 

 hind wings in both sexes and in the subimago rather broadly infuscated. 



H. verticis Say. 



Is a large, rather dark species, with a dark median stripe on the 

 notum ; sometimes there is a faint dash under the bulla, as in H. 

 Canadetisis. 



Heptagenia luridipermis Burm. 



Male: brownish; notum rich brown j dorsum of abdomen brownish ; 

 two approximate submedian streaks, a lateral streak, and hind margin of 

 each segment darker; setse pale, alternate joinings plainly brown; legs 

 faintly brownish, all femora with dark middle band, and dark at tips, tip 

 of tibia I black ; venter pale brownish, lighter at tip ; wings hyaline, 

 faintly darker in the apical marginal area, venation uniformly pale brown, 

 the basal costal cross-vein heavily black, about seven cross-veins before 

 bulla, about twelve beyond, all simple ; basal joint of tarsus I hardly one- 

 half as long as second, subequal to fifth. Male genitalia similar to//. 

 placita, but the ventral plate is not so deeply emarginate in middle, and 

 the forceps limb is rather longer. Length, ii mm.; wing^ 13 mm. 



From Johnstown, N. Y., June i. (Alexander.) Also Westfield, N. 

 Y., and Washington, D. C. 



Fig. 14. — Heptagenia luridipennis , male 

 forceps and last dorsal segment. 



Fig. 15. — Epeorus pleiiralis, male forceps and 

 middle appendages from side. 



Heptagenia ( Epeorus) pleuralis, n. sp. 



Pale reddish-brown above, paler beneath ; each side from base of 

 fore wing forward is a furcate white streak, other smaller white streaks and 

 spots on the pleura ; legs pale brownish, a prominent black spot on under 

 side of each femur, a little before the middle ; setae long, brown, joinings 



