PLECOPTERA OF NORTH AMERICA 243 



pressed area between the hind ocelli; hind ocelli about 

 three times as close to eyes as to each other; antennae 

 brown, composed of about fifty-five segments. 



Prothorax brown, broader than long, slightly widened 

 posteriorly; angles rounded; surface somewhat rugose. 

 Legs brown. Wings subhyaline; subcosta gradually ap- 

 proaches costa until it bends down rather abruptly some 

 little distance before the cord; no costal crossveins, ex- 

 cept one at the tip of subcosta when Sc does not actually 

 touch costa ; no crossvein beyond the cord. 



Abdomen brown. Cerci of male composed of four short 

 segments. 



Male. Supra-anal process consists of two short erect 

 rounded processes one behind the other and each bilobed 

 at the tip; subanal lobes asymmetrical and quite compli- 

 cated, each lobe has a triangular inward pointing chiti- 

 nized sheath above, and underneath these processes are 

 seen the lower portions of the lobes as shown in plate 45, 

 figures 5 and 6; a large raised granular process or lobe 

 at the base of each cercus; ninth abdominal sternite 

 greatly prolonged into a subgenital plate which reaches 

 far beyond the tip of segment ten ; near the base of the 

 subgenital plate is a broadly rounded ventral appendage 

 or lobe. 



Female, unknown. 



Holotype, male, March 18, Jaffrey, N. H. (C. W. John- 

 son, Cornell University Collection). 



Taeniopteryx fasciata Burmeister. 



(Plate 33, fig. 2; plate 45, figs. 3, 4; plate 46, fig. 2.) 



1839. Semblis fasciata Burmeister, Handb. Ent., 2:875. 



1842. Nemoura fasciata Pictet, Ins. Neurop., 359. 



1852. Nemoura fasciata Walker, Cat., p. 179. 



1861. Taeniopteryx fasciata Hagen, Syn. Neur. N. A., p. 34. 



1892. Taeniopteryx fasciata Banks, Cat., p. 342. 



1904. Taeniopteryx fasciata Banks, Proc. Ent. Soc. Wash., 6:205. 



1907. Shabdiopteryx fasciata Banks, Cat. Neurop. Ins., p. 14. 



1861. Taeniopteryx frigida Hagen, Syn. Neur. N. A., p. 35. 



1892. Taeniopteryx frigida Banks, Cat., p. 342. 



1904. Taeniopteryx frigida Banks, Proc. Ent. Soc. Wash., 6:205. 



1907. Taeniopteryx frigida Banks, Cat. Neur. Ins., p. 14. 



1908. Taeniopteryx frigida Banks, Proc. Ent. Soc. Wash., 9:150. 



Length to tip of wings, male, 10-12 mm. ; female, 14-15 

 mm. Expanse, male, 18-22 mm.; female, 26-27 mm. 



General color blackish. 



Head dark brown to blackish with yellow inside the 

 eyes; a depressed area between the hind ocelli; large 

 black flat areas just in front of anterior ocelli; occiput 



