108 



CONTEIBITTIONS TO CAjSTADIAN PALEONTOLOGY 



1906). There is also au example from Quilchena (July 31, 1906), in 

 which slight difierences in detail may be recognized; but -which 

 probably cannot be separated specifically from P. pictipennis. Both 

 specimens are quite too imperfectly preserved to admit of exact iden- 

 tification. The form from Quilchena exhibits a stout body greatly 

 overhung by the wings, relatively short robust femora, but in the 

 hind legs very long tibise. 



Fig. 11. — Penthetria ? pictipennis, Handlirsch.. 



Penthetria elatior, sp. nov. Pig. 12. 



Locality : Tulameen river, opposite Vermilion cliff — (August 6, 

 1906. L.M.L.). 



A remarkably large form, with wings M™"' in length, slightly 

 cambered in shape, and about three times as long as broad. The 

 radius proceeds toward the anterior margin in a gentle curve and 

 extends about seven-tenths the length of the wing. The sector 

 originates at about one-fourth the length of the wing, and dichoto- 

 mizes somewhat below half its own length, and directly above the 

 termination of the radius. The anterior branch is strongly arcuate, 

 long, and fuses in the anterior margin midway between the radius 

 and the posterior branch of the sector. The radiomedial cross-vein 

 is situated exactly between the origin and lihe furcation of the sector, 

 immediately above the middle of the wing. The media bifurcates 

 exactly in the centre of the wing. The cubitus takes a relatively 

 oblique course toward the posterior margin, so that its pos'terior 

 branch scarcely reaches beyond two-fifths the length of the wing. 

 The medioeubital cross-vein is situated twice as far above the radio- 



