PLECOPTEKA OF NORTH AMERICA 267 



appressed to the tergum, reaching to the tip of the upper 

 part; subanal lobes ending in short upcurved spine-like 

 processes; tenth tergite medially bifid; ninth sternite 

 slightly produced into an evenly rounded subgenital plate. 



Female. Eighth abdominal sternite not produced into 

 a definite subgenital plate. 



Holotype, male, allotype, female, April, 28, 1907, 

 Aweme, Man. (N. Griddle, in Canadian Entomological 

 Collection, Ottawa, Can.) ; paratypes, six males and five 

 females, from same locality. 



Capnia barberi Claassen. 



(Plate 49, fig. 10.) 

 1924. Capnia barberi Claassen, Can. Ent., 56:55. 



Length to tip of wings, male, 5 mm. Expanse, male, 

 about 8 mm. 



General color dark brown. Head wider than prothorax, 

 dark brown ; occiput slightly rugose ; hind ocelli about 

 twice as close to eyes as to each other; antennae dark 

 brown with about thirty-one segments ; palpi brown. Pro- 

 thorax brown, wider than long; front angles broadly 

 rounded, hind angles more narrowly rounded ; widened 

 posteriorly; sides somewhat convex; surface moderately 

 rugose. Legs brown. Wings uniformly subhyaline ; veins 

 dark brown ; in f orewing Rs comes off of radius at a very 

 broad angle. (The wings in this specimen are in rather 

 poor condition, not being fully expanded.) Antennae 

 brown ; cerci brown (one absent, the other with only 

 twelve segments present). 



Male. Seventh abdominal tergite with a narrow, sharp 

 chitinized tubercle; supra-anal process recurved, com- 

 posed of three parts, a lower excavated sheath which ex- 

 tends to the tubercle, and two pointed processes about 

 two-thirds as long as the sheath ; subanal lobes short, tri- 

 angular; ninth sternite slightly produced into an evenly 

 rounded subgenital plate, which bears a short tubercle be- 

 hind ; ninth tergite partly divided, tenth tergite bifid. 



Female, unknown. 



Holotype, male, Jan. 24, 1923, on snow, Feather River 

 Canyon, near Caribou, Plumas Co., Calif., Sunnyside Mine, 

 near to Belden (H. S. Barber, in Collection of U. S. Na- 

 tional Museum). 



