THE CANADIAN ENTOMOLOGIST. . 83 



There are some 14 cross-veins in the costal space before the 

 end of the sabcosta, and seven beyond. The cross-veins in the 

 median an-.i cubital areas are 5 and 7 respectively. Legs yellowish 

 brown, not distinctly bicoloured; Sth ventral segment of the female 

 slightly produced and broadly emarginate in the middle by a shal- 

 low wide notch. 



Type — A female in the Cornell University collection from 

 Pelham, Mass., reared on the 20th of May, 1913, by the junior 

 author. 



Peltoperla anna, n. sp. 



Length of male 13 to 14 mm.; expands 23 mm. Length of 

 female 20 mm.; expands 27 mm. 



A yellowish species (possibly greenish in life), having inter- 

 segmental darker areas about the bases of the legs and on the sides 

 of the thorax. Head yellow% Antenna? yellow^ish, slightly darker 

 on the pedicel and on the apical half. Prothorax with pale brown 

 marks just before the middle of the disc and a transverse brownish 

 crescent close to the rear maigin. Legs yellow, with a knee-cap 

 of brownish-yellow on the base of the tibia externally, and the 

 tips of the tarsi also brownish. Abdomen yellow, with broad, 

 half-rings of brow'n margining the ventral segments. A pair of 

 large, brownish blotches almost covers the 9th segment ventrally 

 and the tips of the subanal plates are sufTused with brown. Wings 

 yellowish hyaline, with the veins darker. 



The Sth ventral segment of the female shows in this species 

 no elongations. The plate is cut squarely across the margin, 

 and scarcely differs in appearance from that of adjacent segments. 

 At the base of the 9th ventral segment of the male, there is a 

 chitinized knob supported upon a short pedicel directed backward. 

 The apex of this segment is slightly produced upward in the rear 

 and co\ers the bases of the enlarged subanal places, which are 

 pointed, and reach with their tips the level of the dorsum of the 

 segment. Caudal appendages short, abruptly tapering; each of 

 the segments beyond the 4th basal bears a single, stout, down- 

 wardly directed seta. 



Types — Male and female, in the Cornell University collection 

 were collected at Burton, Ga., (altitude 1800 feet), on May 21st, 

 1911, by Dr. J, Chester Bradley. 



