480 TERTIARY INSECTS OF NORTH AMERICA. 



head is rather large at base, tapering with a short, broad snout, not so deep 

 as broad, equal and at the tip broadly rounded, directed downward and for- 

 ward, slightly bent along the front margin ; the antennal sorobes extend 

 from the front edge of the eye nearly to the end of the rostrum, and are 

 broadest next the eye, where they are half as broad as the eye itself, taper- 

 ing regularly throughout and shallow ; tlie eyes are moderately large, 

 broadly oval, transverse or a little oblique, the upper extremity thrown 

 backward and the lower forward. The protliorax is short, only about half 

 as long as deep, not tumid, rather cylindrical, its surface smooth. The elytra 

 are not broader nor higher at their base tlian the surface of the prouotum, 

 and they are simple and furnished with seven equidistant, equalh' and not 

 deeply impressed, longitudinal stria?, O.IG"""" apart from one another, and the 

 outer ones an equal distance from the adjacent border ; tliese strije are pro- 

 vided with slightly longitudinal |)unctures at regular intervals of about 

 0.1™™, by which the strioe are carried to about double their usual depth 

 Some of the specimens have lost tlie elytra, and on these tlie posterior edge 

 of the hind coxa? have been impressed througli tlie abdomen, giving the 

 insects the appearance of being furnished with elytra winch cover but half 

 of the abdomen. The same thing may be noticed in other species. 



Length of body exclusive of rostrum, 5.75™™: of rostrum beyond the 

 eye, 0.02™™ ; breadtli of same, 0.5"'" ; depth of same, 0.44™™ ; length of eye, 

 36™™; widthof same, 0.24™™; lengthof prothorax, 0.72™™ ; height of same, 

 1.3™™; length of elytra, 3.05™™ ; Avidthof same, 1.2™™ ; lengthof fore femora, 

 0.72™™ ; width of same, 0.32™™ ; length of middle femova, 0.8™™ ; width of 

 same, 0.32™™; length of hind femora, 1.1™™; width of same, 0.34™™. 



Green River, Wyoming. Numerous specimens. 



EpiCiERUS EFFOSSUS. 



PL 8, Figs. 7, 35. 



Eudiagogus effossm Sciulil., Bull. U. S. Geol. Geogr. Siirv. Terr., II, 85-86 (1876). 

 Epica-rus effossua Sciidd., Bull. U. S. Geol. Geogr. Snrv. Terr., IV, 765 (1878). 



Nearly fifty specimens of this species are at hand, all found in Richard- 

 son's shales by Mr. Richardson, Mr. Bowditcli, and myself, besides two I 

 found in bods at the same spot, but about tliirtv meters lower ; these were 

 the only Coleoptera found at the Intter spot, excepting a single specimen of 

 Otiorhynchus tumbse Scudd., belonging to the same family. Most of the 



