Handlirsoh] CANADIAN POSSIL INSECTS 117 



as does the latter above the forking of the media. The first anal 

 vein runs nearly parallel with the cubitus. 



Penthetria ovalis, sp. nov. Fig. 24. 



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

 1906. KM.L.). 



A subelliptioal wing 10°"" long, the breadth and length of which 

 are in the proportion of 1:3-4. The radius takes a nearly straight 

 course, and reaches seven-tenths the length of the wing. Its sector 

 originates at one-fourth the length of the wing, and is very gently 

 arcuate. It dichotomizes in half its own length, and the anterior 

 branch makes a strong curve, is widely divergent, and fuses in the 

 margin midway between the radius and the posterior branch of the 

 sector. The radiomedial cross-vein is situated much nearer to the 



Pig. 24. — Penthetria ovalis, Handlirsch. 



bifurcation than to the origin of the sector and is directly above the 

 middle of the wing. Exactly in the centre of the wing the media 

 separates into two long moderately divergent branches. The posterior 

 branch of the cubitus is very much curved, and strikes the posterior 

 border in the centre. The mediocubital cross-vein is more than three 

 times as far removed from the radiomedial cross-vein as is the latter 

 from the forking of the media. Immediately below the cubitus and 

 parallel with it runs a fold, and farther below a divergent anal vein 

 is clearly seen. The entire wing appears to have been uniformly 

 opaque. 



Penthetria transiioria, sp. nov. Fig. 25. 



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

 1906. L.M.L.). 



This specimen exhibits an entire insect, the body of which is very 

 much crushed, yet it is possible to make out that the thorax and 

 abdomen were relatively robust, while the legs were slender. The 

 wings are 10°™ long, and are well preserved. They show a rather 



3337—3 



