58 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
more than two and a third times in the length; the form does not differ from 
that of the preceding species. Nine or more series of cireular puncta can 
be seen, the puncta of moderate size and somewhat impressed, separated 
from their neighbors in the same row by rather less than their diameter, but 
from those in the neighboring row by very much more than that. Inter- 
spaces smooth and flat, or gently arched. 
Length of elytra, 3:1"; breadth, 1:3". None are quite perfect, and 
the measurements may not represent the dimensions with exactitude. 
White river, Colorado, from the lowest shales. One specimen, Nos. 452 
and 454, U.S. Geological Survey. White river, Utah, from the very highest 
shales on the northern buttes next the Colorado line. One specimen, No. 
897, U. S. Geological Survey. 
PHYLLOBIUS AVUS. 
Pixs Bio 1 
Single elytra are all that are known of this species, though one speci- 
men shows part of the abdomen, but too vaguely to be of any aid. The 
elytron is about two and two-fifths longer than broad, very gently vaulted, 
the apex somewhat acuminate. Eight series of puncta can be traced, slightly 
less distant from one another the farther they are from the straight sutural 
margin, the puncta very small, sharply but not deeply impressed, circular 
or with a slight longitudinal tendency. Interspaces flat and smooth, the 
middle line distinctly elevated as a slight and slender carina. 
Length, 3°"; breadth, 1:25". 
It is possible that the specimens from Green river do not belong here; 
they are certainly of a broader form than the typical specimen and more 
obscure. 
White river, Utah, from the highest beds on the northern buttes next 
the Colorado line. One specimen, No. 701, U. 8. Geological Survey. 
Green River, Wyoming, from the buttes behind the town. Two specimens, 
Nos. 736, 980, U.S. Geological Survey. 
SCYTHROPUS Schonherr. 
A genus with relatively few species found in the northern hemisphere, 
and in about equal numbers in the Old and New World, though our species 
