38 CONTRIBUTIONS TO CANADIAN PALAEONTOLOGY. 



and irregularity at the base of the four outer series ; the fifth and sixth 

 unite before the middle of the distal half of the elytron, and shortly after 

 these with the fourth ; while the seventh and eighth unite a little before 

 the tip, and still further out these with the other united series ; at the 

 base all curve toward the inner base of the elytron ; interspaces between 

 striie flat, without punctures but roughened. 



Length of fragment, 9-3"™; probable complete length, lO-lO-S""™; 

 breadth, 2-6™"- 



North fork of Similkameen River, British Columbia. One specimen and 

 its reverse. No. lOOab — Dr. G. M. Dawson, 1888. 



Cryptohypnus Eschscholtz. 



Cryptohypnus ? terrestris. 



Cryptohypnus? ten-eatris Scudd., Rep. Proe;. Geol. Surv. Can., 1877-1878, 181-182 b 

 (1879) ; Id., Tert. Ins. N. A., 497, PI. n, fig. .30 (1890). 



A single, very nearly perfect, elytron, broken slightly at the base, which 

 belongs, with little doubt, to the Elateridte, is provisionally referred to 

 this genus. The form of the elytron is as in C. planatus LeC, which is 

 slightly larger than the fossil species. The surface is very minutely punc- 

 tato-rugose, and the strise are sharp and clearly defined. In nearly all 

 Elateridse the fourth stria from the suture unites with the third rather 

 than with the fifth, although it often runs independently to the tip. In 

 Cryptohypnus there appears to be more latitude, nearly any of the strise 

 uniting with either of their neighbours ; and in this species the fourth 

 unites with the fifth some distance before the tip, while the first three run 

 to the extremity of the elytron, and the sixth, seventh and eighth, fol- 

 lowing the curve of the outer margin, terminate near the tip of the third 

 stria. , 



Length of elytron, 5-5"™; breadth, I'T-S"". 



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

 No. 59— Dr. G. M. Dawson. 



From the same locality were brought the remains of another insect, 

 consisting of the metasternal plates, one side complete, the other broken, 

 and plainly belonging to the Elateridse. The perfect side agrees so well 

 with the same part in Cryptohypnus planatus LeC, that I refer it to the 

 fossil species above described, which its size renders entirely admissible. 

 It is, however, relatively longer than in C planatus, the perfect half 

 being about a-third longer than broad, not including, of course, the side 

 pieces, which are not preserved. The surface is densely and rather heavily 

 punctate, more densely and perhaps less deeply next the coxal cavities ; 



