60 TERTIARY RHYNCHOPHOROUS COLEOPTERA, 
spaces smooth and well arched, with a median series of short, distant 
bristles. 
Length of elytra, 19-26"; average, 2:°3""; breadth, 0-8-1:1™. 
Green River, Wyoming, from the buttes behind the town. Five speci- 
mens, Nos. 724, 744, 746, 981, 993, U. 8S. Geological Survey. The same 
from the fish cut on railway. One specimen, No. 41, L. A. Lee. White 
river, Utah, from the very highest beds on the north side next Colorado 
boundary. Seven specimens, Nos. 705, 706, 889, 907, 908, 916, 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. 8. Geological Survey. 
ScYTHROPUS SOMNICULOSUS. 
Pl. 1x, Fig. 18. 
A single elytron is known. It is alittle more than two and a third 
times longer than broad, slightly the broadest in the middle, tapering only 
at the apex, which is slightly angulate, the outer margin only very slightly 
arcuate. There are eight delicately impressed punctate strive, the puncta 
distinct and deeply impressed in the basal half, shallow apically, rather 
small and circular throughout, besides two approximate impunctate marginal 
strive, 
Length of elytron, 4""; breadth, 1-75™". 
Roan mountains, western Colorado, from the fichest beds at summit of 
the bluffs overhanging the head of East Salt creek. One specimen, No. 
176, U. S. Geological Survey. 
ScyTHROPUS? ABACUS. 
Plax ie. i: 
This species is here referred very doubtfully. It is somewhat distorted 
in preservation and somewhat imperfect, but seems to agree better with this 
genus than with any other I have seen. The anterior part of the head with 
the beak is uncertain, there appearing to have been here some crushing and 
