42 TERTIARY COLEOPTERA OF NORTH AMERICA. 



Berosus sexstriatus. 



Berosus sexstriatus Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 760-761 (1878); 

 Tert. Ins. N. A., 513-514, pi. 7, fig. 40 (1890). 



Grreen River, Wyoming. 



Berosus tenuis. 



Berosus tenuis Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 760 (1878); Tert. 

 Ins. N. A., 514, pi. 8, fig. 8 (1890). 



Grreen River, Wyoming. 



LACCOBIUS Erichson. 



A limited genus of about a dozen species, almost exclusively confined 

 to the north temperate zone and of which only two species are known in 

 the United States. A single fossil species is found in the Pleistocene of 

 Galicia, three others in the older Tertiaries of France and the Rhine, and 

 one in Wyoming. 



Laccobius elongatus. 



LaccoUtis eloiigatiis '!>,c\\M., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 761 (1878); 

 Tert. Ins. N. A., 513, pi. 7, figs. 27, 28 (1890). 



Green River, Wyoming. 



PHILHYDRUS Soher. 



A nearly cosmopolitan genus, with numerous species, many found in 

 North Amei'ica. A fossil species occurs in the Pleistocene of Galicia and 

 at least three others in the older Tertiaries of the Rhine and Wyoming. 



Philhydeus prim^vus. 



Philhydrus jprinuemts Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., II, 78 (1876); 

 Tert. Ins. N. A., 512, pi. 8, fig. 5 (1890). 



Green River, Wyoming. 



Philhydrus spp. 

 Philhydrus spp., Scudd., Tert. Ins. N. A., 512 (1890). 

 Green River, Wyoming. 



