scuDDER.] CANADIAN FOSSIL INSECTS. 21 



The genus most resembles Palseoptysma from the same beds, but 

 is a much larger form with straight costa beyond the shoulder and 

 with much earlier divarication of the radial vein. A single species is 

 known. 



Ptysmapliora fletcheri. 



PI. I, fig. 6. 



The tegraina are light brown in color, a little darker near the mar- 

 gins, with the veins delicately traced as pallid lines. The transversals 

 forming the base of the apical cells run in a somewhat zigzag 

 course across the middle of the outer half of the wing uniting the 

 outermost veins, and beyond these transversals the veins are nearly all 

 more or less forked. The tegmina appear to have a coriaceous tex- 

 ture but no trace of punctuation can anywhere be seen. 



Length of tegmina, 14.5"'™.; breadth, 4""". 



Named for the Government Entomologist of Canada. 



North Fork of Similkameen River. — One specimen. No. 95ab, Dr. 

 G. M. Dawson, 1888. 



Palseoptysma [rtaXutdi, --fjqtj.a). Gen. nov. 



Known only by its tegmina, which are elongated, equal, subcultri- 

 forin, obliquely truncate at the tip with the angles rounded. The 

 radial vein recedes remarkably from the costal margin in the basal half 

 of the tegmina, and forks apparently before the middle of the tegmina 

 (the base of which is lost), the upper branch sending a single offshoot 

 to form a marginal cell jjrevious to the anastomosis, which is in about 

 the middle of the apical two-fifths of the tegmina ; the main apical 

 cells are thus very long ; the ulnar vein forks by or before the middle 

 of the basal half of the tegmina. 



This is a very slender form of Aphrophorina3, and I scarcely know 

 with what modern type to compare it. A single species occurs in 

 British Columbia. 



Palseoptysma venosa. 



PI. I, fig. 8. 



The single specimen exhibits only the greater part of one of the 

 tegmina, showing that they were nearly or quite three and a half 

 times longer than broad, faintly cultriform (a characteristic exag- 

 erated in the figui-e by too strong a curvature), the costal margin 

 gently and regularly convex. The general color was a nearly uniform 

 light brown, but with all the veins heavily marked in very dark 



2 



