88 TERTIARY COLEOPTERA OF NORTH AMERICA. 



Scutellum rather large, triangular, equiangular, the posterior angle well 

 rounded. Elytra at base of the extreme widtli of the thorax and subpar- 

 allel, together a third longer than broad, and half as long again as head 

 and thorax together, truncate, with rounded apex, exposing two abdominal 

 segments, with faint and rather numerous striae, the interspaces exceed- 

 ingly finely and delicately punctulate. Abdomen faintly punctate. No 

 signs of any villosity in any part of the body, but this may be accidental, 

 as the tibiae appear to be as villous as in the modern species of Nitidula. 



The species does not appear to be at all nearly related to any of our 

 living native species, and the form of the head, the absence of any inde- 

 pendent prominence of the clypeus, with the rapidly narrowing thorax and 

 striate elytra, lead one to suspect that it will be found impossible to retain 

 it in this genus. The general aspect is that of Nitidula rather than of any 

 other genus of the family, and the legs have a similar structure. Unfortu- 

 nately the antennae are not preserved. It is neai-est N. rufipes Linn. 



Length, 6.5 mm.; breadth, 1.8 mm. 



Florissant, Colorado; one specimen. No. 13565. 



PROMETOPIA Erichson. 



This is a genus of very wide range, but with exceedingly few species, 

 of which one is found in North America; those of the Old World occur in 

 the Tropics. One fossil species has been recorded from British Columbia. 



Prometopia depilis. 



Prometopia depilis Scudd., Rep. Prog. Geol. Surv. Can., 1875-76, 278-279 (French 

 ed., 308-309) (1877); Tert. Ins. N. A., 500, pi. 2, %. 29 (1890). 



Quesnel, British Columbia. 



PHENOLIA Erichson. 



A monotj^pic genus, found in North America, where also a single fossil 

 is found, in the Tertiar}^ of Wyoming. 



Phenolia incapax. 



Phenolia incapax 8cnM. , Bull. U. S. Geol. Geogr. Surv. Terr., II, 80 (1876); Tert. 

 Ins. N. A., 499, pi. 7, fig. 23 (1890). 



Green River, Wyoming. 



