COLEOPTERA— OTIOHHYNCHID.E. 475 



quite lost sight of; the edges of the elytron for about the width of one of 

 tiie costse is also smooth and depressed; the front border is sinuous, and 

 the sutural margin appears the same on the stone, from the compression the 

 elytron has undergone, whicli .was sufficient to split it down the. middle 

 through half its length. 



Length of fragment, 8'"™ ; greatest breadth of unsplit portion, 4°"". 



Chagrin Valley, White River, Colorado. One specimen (W. Denton). 



Family OTIORHYNCHIDvE Shuekard. 

 EUDIAGOGUS Schonherr. 



EUDIAGOGUS TERROSUS. 



PI. 8, Fig. 29. 



Eudiagogus terrosiis Soudil., Bull. U. S. Geol. Geogr. Snrv. Terr., IV, 76G-767 (1878). 



This species, whicli seems more jjroperly referable to Eudiagogus than 

 tlie others formerly so named by me, is represented by a single specimen 

 and its reverse, preserved on a side view. The snout is short, as long as the 

 eyes, scarcely so long as the head, and stout ; the eyes transverse, rather 

 large, subreniform. The thorax appears to be smooth, like the head, deep 

 and short, its front border extending forward on the sides toward the lower 

 part of the eye. The elytra, the lower surface of which does not appear to 

 be in view, are broad and long, rectangular at tip, furnished with more 

 than eight rows of frequent, rounded, moderately large and shallow punct- 

 ures, and between each pair of rows a similar row with smaller punctures. 



Length of body, 6""" ; of elytra, 4.55'"'" ; of eyes, O.S"""". 



Green River, Wyoming. One specimen, Nos. 4024 and 4078. 



TANYMECUS Germar. 

 Tanymecus seculorum. 



PI. 8, Fig. 22. 



A single specimen preserved on a side view shows all the parts of the 

 body tolerably well, but only a confused mass of appendages. Unfortu- 

 nately the plate was engraved before the whole of the head, and especially 

 the rostrum, was uncovered, and the eye-like spot there shown is wholly 



