46 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
their entire length, the surface microscopically punctate with closely 
crowded, very shallow punctures running into each other laterally, so as 
to effect a faint and exceedingly delicate transverse wrinkling; besides 
which there are longitudinal rows of rather large, deep, circular punctures 
(bead-like elevations in this cast) removed from each other by considerably 
more than their own diameter. 
Length of elytron, 4"; breadth, 1-2". 
Roan mountains, western Colorado, from close to the richest beds at 
the summit of the cliff at head of East Salt creek. One specimen, No. 1, 
U.S. Geological Survey | 
_OTIORHYNCHITES. 
Fritsch has employed this term for the elytron of a Coleopterous insect 
from Secondary rocks plainly belonging to the Rhynchophora. It is here 
used for certain Tertiary elytra, most of them bearing a close resemblance 
to those of Otiorhynchus, merely to indicate their general affinities. They 
are much larger than our native species of Otiorhynchus. Four species are 
described, two from the Roan mountains, Colorado, one of these also from 
Green river, and one each from Fossil, Wyoming, and Florissant, Colorado. 
Table of the species of Otiorhynchites. 
Markings of elytra relatively delicate. 
Outer margin of elytra nearly parallel to inner. ..-....-.--.----....- absentivus. 
Outer margin strongly convex. 
Interspaces between the'strice dats. 22. eee eel ee eee eee eee tysoni. 
Interspaces between the strize strongly convex... -.-- bed Sa wigeeme ees Fossilis. 
Markings of elytra exceedingly heavy--..---------...--------.------- commutatus. 
OTIORHYNCHITES ABSENTIVUS. 
Pi ax, Bios 13: 
Elytra somewhat elongated, subparallel with well rounded apex, with 
ten rows of moderately deep punctate striae, subconfluent and evanescent 
at the tip, the tenth stria entire, the puncta circular, with a slight 
tendency to become longitudinal, moderately deep, each separated from its 
