GO TERTIARY RHYNCIIOPHOROUS COLEOPTERA. 



spaces smooth and well arched, with a median series of short, distant 

 bristles. 



Lengtli of elytra, 1-9-2-G""": average, 2-3"""; breadtli, O-S-M"™ 

 Green River, Wyoming-, from the buttes behind the town. Five speci- 

 mens, Nos. 724, 744, 74r;, 1)81, 91)3, U. S. Geological Snrvey. The same 

 from the fish cut on railway. One specimen. No. 41, L. A. Lee. White 

 ri\er, Utah, from the very highest beds on the north side next Colorado 

 boundary. Seven specimens, Nos. 705, 706, SSi), 007, 008, 016, 924, 

 U. S. Geological Survey. Roan mountains, western Colorado, from the 

 richest beds at top of bluff overlooking East Salt creek. Three specimens, 

 Nos. 943 and 944, 1045, 1051, U. S. Geological Survey; from near the. 

 same, one specimen, No. 22, U. S. Geological Survey. 



SCYTHEOPUS SOMNICULOSUS. 



PI. IX, Fig. 18. 



A single elytron is known. It is a .little more than two and a third 

 times longer than broad, slightly the Ijroadest in the middle, tapering only 

 at the apex, which is shghtly angulate, the outer margin only very slightly 

 arcuate. There are eight delicately impressed piuictate striii?, the puncta 

 distinct and dee])ly impressed in the basal half, shallow apically, rather 

 small and I'ircular throughout, besides two approximate impunctate marginal 

 stria^. 



Lengtli of elytron, 4"""; breadth, 1-75"™. 



Roan mountains, western Colorado, from the richest beds at summit of 

 the l)luffs overhanging the head of East Salt creek. One specimen. No. 

 176, U. S. Geological Survey. 



SCVTHROPUS? ABACUS. 



PI. IX, Fig. 15. 



This species is here referred very doiditfully. It is somewhat distorted 

 in preservation and somewhat imperfect, but seems to agree better with this 

 genus than with ;\ux other I liave seen. The anterior part of the head witli 

 the beak is uncertain, there appearing to ha\e l)eeu here some crushing and 



