8CUDDER.] CANADIAN FOSSIL INSECTS. 19 



anomalous nein-ation. The costal vein is of extraordinary stoutness 

 and importance, running about midway between the radial vein and the 

 margin, and extending certainly halfway to the tip, the heaviest vein 

 in the wing. But what is more striking is that the radial vein forks 

 very near the base, scarcely beyond the costal shoulder, while the 

 ulnar, instead of having an earlier divarication, does not fork until 

 the vein has passed as far beyond the radial fork, as the latter is from 

 the base of the wing. 



A single species is known, of a large size. 



Stenolocris venosa. 



PI. I, fig. 11. 



The fragment represents about half of a very large wing-cover, 

 having the general form of that of Oercopis grandescens from the 

 same bed. The costal margin is the only one that remains intact ; 

 this shows a broadly angulate rounded shoulder. The wing is a little 

 darker than the stone, but the veins are heavily marked, the costal 

 vein in black, the others in dark brown, the latter color also extend- 

 ing in an oblique broad crenulate belt across the middle of the inner 

 half of the fragment, the same area, as well as the embrowned vein 

 margins, profusely and rather finely granulate. 



Length of fragment, 14""" ; probable length of tegmina, 24°'"" ; 

 breadth of fragment, V.S"". 



North Fork of Similkameen- River. — One specimen. No. 86, Dr. G. 

 M. Dawson, 1888. 



Sub-family APHROPHORINJE. 



Although not so abundant in the species of this group as the ter- 

 tiaries of the United States, the British Columbia beds show more 

 variety in structure, as indicated by the number of generic groups, 

 half of which are here made known for the first time, while the others 

 agree with those from the United States deposits. 



Palaphkodbs Scudder. 



Palaphrodes Scudd., Tert. Ins. N. A., 333 (1890). 



To this genus, recently established upon a number of species found 

 at Florissant, Colorado, must pretty certainly be referred an incom- 

 plete fragment from the Similkameen. 



Palaphrodes sp. 

 The presence of a species of this genus in the British Columbia 

 tertiaries is indicated by a part of the overlapping hind wings of one 



