40 CONTRIBUTIONS TO CANADIAN PALAEONTOLOGY. 



Elaterites s,p. 

 PL III, fig. 5. 



One can say scarcely more of this slender elytron than to describe its 

 form, which is represented in the figure, and to state that as preserved it 

 appears almost perfectly flat, and to show indications of longitudinal series 

 of punctures after the general method of the shards of Elateridse. 



Length, S-S"""; breadth, 1-6""" 



North fork of SimUkameen River, British Columbia. One specimen. 

 No. 102 (on the same stone with the wing of a fly, Plecia.) — Dr. G. M. 

 Dawson, 1888. 



ElateridsD .' sp. 



Maierida!sp.,SovDD.,'Re^. Prog. Geol. Surv. Can., 1877-1878, 182b (1879) ; Id., 

 Terb. Ins. N.A., 498, PI. Ii, fig. 28 (1890). 



In the collection of the Geological Survey of Canada there is an elytron 

 with the base nearly destroyed, which resembles in striation the Hydro- 

 philida;, but is far too elongated to belong to that family, resmbling rather 

 the Elateridse. It is so imperfectly preserved that, perhaps, a nearer 

 determination is impossible at present. There are eight rather faintly 

 impressed but distinct strise, the outermost a little more distinct, especially 

 toward the tip. 



Width of elytron, 1-25""" ; its apparent length, 4-5""'. 

 Nicola River, below main coal seam, British Columbia. One specimen, 

 No. 60— Dr. G. M. Dawson. 



Family BYRRHID^. 



Byrehus Linnd. 

 Byrrhns ottanaensisi, 



Plate H, figs. 6-8. 



This species is very closely allied to B. geminatus LeC, more closely to 

 it than to any other living American form, unless it be B. pettiiii, which 

 I have not been able to examine. So far as can be told from the condi- 

 tion of the fragment, it does not differ from it in size or form, excepting 

 that the prothorax is more regularly vaulted, the front portion being 

 regularly oval and not, as in B. geminatus, slightly flattened in front. 

 What is, however, more relied upon for the distinction of the species is 

 the surface sculpture beneath the clothing of pile (of which latter, except 

 in one or two spots, no sign appears in the fossil), characters which have 



