40 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
marginal strize of either side. The interspaces appear to be nearly flat, the 
strie fine and slightly impressed, and the punctures distinct, but slight and 
exceptionally distant. 
Length, 65"; breadth, 2°5™". 
Lowest shales, White river, western Colorado. One specimen, No. 
487, U.S. Geological Survey. 
OPHRYASTITES DISPERTITUS. 
SS) oe ES 
Plax: Views: 
A poorly preserved elytron, of very broad form and overlying in part 
its mate, represents a stouter but otherwise rather smaller species than the 
others. ‘The elytron is scarcely less than twice as long as broad, tapering 
from the middle, but only gradually, until near the tip, where it evidently 
had an abrupt descent, the apex being broadly rounded. There are nine 
shallow and rather broad striz, which are filled with rather sharply and 
somewhat deeply impressed, not very large, circular puncta, separated from 
one another by about their own diameter. 
Length of elytron, 45"; breadth, 2°5™. 
Roan mountains, western Colorado, from the richest beds at the summit 
of the bluffs at head of East Salt creek. One specimen, No. 135, U.S. 
Geological Survey. 
EXOMIAS Bedel. 
This is a European genus, fairly supplied with species, of which a 
single one is also found in the United States, in New York. To it I refer 
a single fossil from the Roan mountains of Colorado. 
EXOMIAS OBDUREFACTUS. 
I ~ ;\s 
Pl. 1x, Fig. 4. 
Body subeylindrical; head short; beak half as long as prothorax, or 
as long as the head, stout, broadly rounded at tip, front margin rather 
strongly convex; eyes circular, their diameter half the width of the beak, 
the facets about 0°02" in diameter. Prothorax higher than long, truncate 
