264 THOMAS SAY FOUNDATION 



Female. Eighth sternite not produced into a subgenital 

 plate, but with the hind margin somewhat uneven. 



Holotype, male, allotype, female, Las Vegas Hot 

 Springs, N. M., 7,000 feet, Jan. 22, 1902 (T. D. A. Cockrell, 

 in Cornell University Collection.) 



Capnia nearctica Banks. 



(Plate 49, figs. 2, 3.) 



1918. Capnia nearctica Banks, Rept. Can. Aret. Exp., Vol. Ill, Part 

 B, 3B. 



Length to tip of wings, male, 3 mm. ; female, 6 mm. To 

 tip of abdomen, male, 5.5 mm. ; female, 6 mm. 



General color black. Head black, wider than prothorax, 

 hairy, lateral tubercles black, smooth ; hind ocelli closer 

 to the eyes than to each other; antennae black. 



Prothorax wider than long, slightly widened behind; 

 angles rounded ; surface moderately rugose. Legs black- 

 ish ; middle tarsal segment not more than one-fourth as 

 long as the first segment. Wings uniformly but lightly 

 inf uscated ; veins heavy, brown ; wings of male much 

 shorter than abdomen, of female as long as abdomen ; sub- 

 costa reaches almost to the cord. 



Abdomen blackish ; cerci or tails dark brown, hairy. 



Male. Eighth abdominal tergite with a large rounded 

 knob closely beset with short tubercles and sparsely 

 clothed with fine hair; supra-anal process recurved, bifid 

 dorso-ventrally, enlarged at base and longitudinally stri- 

 ated ; subanal lobes triangular, upcurved ; ninth abdominal 

 sternite slightly produced and evenly rounded behind. 



Female. Hind margin of eighth abdominal sternite little 

 or not at all produced into a subgenital plate. 



Type in the Canadian National Collection, Ottawa ; para- 

 types, two females and one male (No. 11296), in the Mu- 

 seum of Comp. Zool., Cambridge, Mass. Collected June 

 25, 1915, at Bernard Harbor, Northwest Territory, Can- 

 ada (Canadian Arctic Expedition). 



Capnia decepta Banks. 



(Plato 49, figs. 4, 5.) 

 1897. Arsapnia decepta Hanks, Trans. Am. Ent. Soc, 24:22. 

 1907. Arsapnia decepta Banks, Cat. Neurop., p. 15. 



Length to tip of wings, male, 7 mm. ; female, 8.5 mm. 

 Expanse, male, 11.5 mm.; female, 14.5 mm. 



General color black. Head entirely black, wider than 

 prothorax, a slight depression just behind the ocellar tri- 

 angle ; narrow, black, polished, slightly raised ridges from 



