112 



CONTEIBUTIONS TO CANADIAN PALEONTOLOGY 



An insect 8™™ in length, with rather long, slender legs and a 

 relatively large head. The length of the wing is 8°™; its form is 

 sub elliptical, with very broadly rounded apical margin. The ratio 

 of the breadth to the length is as 1:2-8. The radius extends rather 

 more than seven-tenths the length of the wing, and terminates in a 

 gentle curve. The sector radii arises within the first third of the 

 length of the wing and dichotomizes directly above half its own 

 length. Its anterior branch is relatively short, strongly curved, very 

 widely divergent, and fuses in the margin at one-third the distance 

 between the radius and the second branch of the sector. The media 

 branches distally below the middle of the wing into two widely diver- 

 gent members. The cubitus is much curved at the beginning, but 

 its two branches slope without marked curvature to the posterior 

 margin. The mediocubital cross-vein is situated one and one-half 

 times as far above the radiomedial cross-vein as is the latter anterior 

 to the bifurcation of the media. 



Pig. 17. — Penthetria nana, Handlirsoh. 

 A second, less well-preserved specimen from the same locality 

 undoubtedly also belongs to this species. 



Penthetria separanda, sp. nov. Fig. 18. 

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

 1906. L.M.L.). 



Fig. 18. — Penthetria separanda, Handlirsoli. 



