494 TERTIARY INSECTS OF NORTH AMERICA. 



Buprestis agree closely together, but do not seem to be plainly referable to 

 any recent American genus, although approaching nearest Buprestis or 

 Ancylocheira. They seem to be nearly related also to the Tertiary species 

 from Sieblos, described by Heyden under the name of B. senecta. For the 

 present I place them in Buprestis. 



The elytra are very long and slender, nearly four times as long as 

 broad, equal throughout the basal two-thirds, then gradually and very reg- 

 ularly tapering by the sloping of the outer edge, the tip a little produced 

 and rounded, and about one-fourth as broad as the middle of the elytron. 

 The surface is ornamented by ten rows of very distinct striae with rather 

 deeply impressed punctse ; these striae are a little sinuous near the base, 

 and there is also a scutellar stria extending down nearly one-third of the 

 elytron ; the outer stria unites with the margin in the middle of the outer 

 half of the elytron ; the three inner and two other outer striae extend to the 

 apex, while the four interior striae terminate : the inner pair a little beyond 

 the termination of the outer stria, the outer pair still a little farther toward 

 the apex, thus allowing for the narrowing of the elytra; the surface 

 between the striae is much broken by sliglit transverse corrugations, giving, 

 with the punctate striae, a rough appearance to the elytra. This species 

 differs from the two following by the great slenderness of the elytra and 

 the more delicate tapering of its tip. 



Length of elytron, 6.5"™; breadth, 1.7°"°. 



Nicola River, below main coal seam, British Columbia. Three speci- 

 mens, Nos. 48, 51 and 52, 54 (Dr. G. M. Dawson). 



Buprestis saxigena. 



PI. 2, Figs. 24, 25. 



Buprestis saxigena Scndd., Rep. Progr. Geol. Surv. Can., 1877-1878, 181B (1879). 



This species is represented by several elytra or fragments of elytra, 

 sometimes preserved by pairs in natural connection. It is very closely 

 allied to the last, but differs from it in having the elytra less slender, the 

 breadth being contained about three and a half times in the length, and in 

 the rather greatef coarseness of the punctuation and transverse corrugation. 

 The striae are the same in number, but are, perhaps, a little more sinuous, 

 and the scutellar stria is shorter, hardly extending so much as a quarter-way 

 down the inner margin ; the other striaj terminate in much the same way as 



