474 TERTIARY INSECTS OF NORTH AMERICA. 



Green River, Wyoming. Two specimens, Nos. 4051 (F. C. Bowditch), 

 15215 (F. C. A. Richardson). 



LISTRONOTUS Jekel. 



LlSTRONOTUS MURATUS. 

 PL 8, Fig. 23. 



A small species, represented by a single specimen showing a lateral 

 view. The beak is a little longer than the thorax, tolerably stout (not 

 tapering, as the figure would seem to represent it), the antenna! groove 

 reaching nearly to the tip, the eye moderately large, round. The whole 

 body is rather slender, the thorax tapering slightly forward from just beyond 

 its base, faintly and sparsely punctulate ; the fore femora increase pn-ttv 

 uniformly in size from the base to near the tip, where they are twice as 

 broad as near the base. Elytra with distant thin striir. 



Length of body, not including rostrum, 4.75 mm ; of head and rostrum 

 combined, 1.75 mm ; of pronotum, 1.2 mm ; of elytra, 3.25 mm . 



Green River, Wyoming. One specimen, No. 90 (Dr. A. S. Packard). 



ENTIMUS Germar. 



TIMUS PRIMORDIALIS 

 PL 5, Figs. 109, 109rt. 



Entimua primordiaUs Sctidil., Bull. U. S. Geol. Geogr. Stirv. Terr., II, 84 (1876); in Zittel, Hamlli. <1. 



PaL-eont,, I, ii. 789, Fig. 1011 (1885). 



Besides a crushed elytron there are only some indeterminate fragments 

 of the neighboring parts of the body. The form and sculpturing- of the 

 elytron resemble those of the Brazilian diamond-beetle so closely that I 

 place the species provisionally in the same genus, or until further remains 

 are obtained. The insect must have been rather small for an Eutimus, is 

 of about the usual size of the species of Otiorhynchus, and it is not at all 

 improbable that it should be referred to the latter genus, some species of 

 which have elytra with similar sculpturing and approximately the same 

 form. The elytron is traversed by ten similar, stout and coarse, longitudi- 

 nal costse, most of which are broken up by transverse depressions into 

 bead-like hemispherical prominences; at the tip of the elytron, however, 

 and on the apical half of the inner two costte this irregularity is nearly or 



