8t} THE CANADIAN ENTOMOLOGIST 



broadly-rounded lobe which covers nearly the entire width of the 

 9th segment, but only the basal third of its length. 



The male type is from Ramapo, New York, collected on the 

 31st of May by Mr. William T. Davis. The female type is in the 

 American Museum of Natural History, and was collected by Mr. 

 William Beutenmuller in the Black Mountains of North Carolina 

 in May. There are several male and female co- types collected 

 at the same time and place b>' Mr. Beutenmuller. 



Peltoperla ada, n. sp. 



Length of female, 14 mm.; expands 24 mm. 



A slender yellow species. Head wholly yellow. Antenna' yellow 

 at the base, growing somewhat tlarker beyond the basal third. 

 Prothorax yellow, with indistinct, embossed markings on the disc, 

 shorter than usual, its length being about half its width. Front 

 border nearly straight, sides converging posteriorly, a little border 

 around hind margin. Legs pale yellowish, excepting the extreme 

 tips of the tarsi, which are darker. Abdomen and setai yellow. 

 The 8th ventral segment of the female produced backward in a 

 broadly rounded entire lobe, which co\ers two-thirds of the 9th 

 segment. 



Type — One female specimen in the Cornell I ni\ersity collec- 

 tion, collected at Black Rock Mountain, Ga., May 24, 1911, by 

 Dr. |. Chester Bradley. 



Peltoperla cora, n sj) 



Length of female 28 mm , expands 50 mm. 



Yellowish brown. Top of head wholly yellow. Distance 

 between ocelli about one-half distance from ocellus to eye. An- 

 tennae pale brown, base pale yellow. Prothorax concave in front, 

 bulging at sides, slightly narrowed posteriorly with obtuse hind 

 angles, hind border straight across middle, sloping backward at 

 sides; length little more than one-half width; margins strongly 

 flaring; disc concolorous, obscurely and sparsely rugose. 



Legs mostly brown, tarsi wholly so; femora and tibiie paler 

 on the sides with margins brown, darker externalh. 



Abdomen brownish, yellow below, excepting the immense 

 ventral plate of the 8th segment, which almost covers the 9th 

 segment. It is very broad, with wide and shallow apical emargina- 



