50 TEETIAKY EHYNCHOrHOltUUS COLEOPTEltA. 



ENTIMUS GL'iinar. 



This is a South American genus, comprising four or five magnificent 

 species, of which the Brazihan diamond beethi is an example. The fossil 

 from White I'iver which I referred here many years ago is too fragmentary 

 to Ije so placed with any eonfidence, but, in default of further specimens to 

 revise the reference, I have thought best to leave it here. 



Entimus primordiai.is. 



Entlmus jmmordialis Sciuld., Bull. U. S. Geol. Geogr. Suiv. Terr., ii, 84(1870); iu 

 Zittel, nandb. d. Paheont., 1, ii, 789, Fig. 1011 (1885); Tert. Ins. N. A., 474-475, 

 PI. v, Figs. 109, 109a (1890). 



This species was based on a single specimen found by Mr. W. Denton 

 on the White river, Colorado, near the Utah boundary. No additional re- 

 mains have been found. 



SYNT0M08TYLUS (Gi'>yTn)uo?, GtvXo?) nam. nov. 



This name is proposed to replace Brachystylus of Schonherr (1845), 

 since the latter name had been previously employed for a genus of Clara- 

 bidaj by Chaudoir (lb38). 



The genus is comj)osed of but a single living species, the ('hlorophcmiis 

 acnfus of Say, found in the middle Atlantic states and Kentucky. One 

 fossil species is found on the White river and the Roan mountains, western 



Colorado. 



Syntomostyhis kuuis. 



PI. IX, Fig. 2. 



Represented only by elytra, which show a slender, strongly convex, 

 laterally arcuate form, agreeing fairly well witli our Lifnto»wsti/li(s acutus 

 (Say) with a similar subacuminate tij), but not su1)sinuous stria'. They are 

 about three times as long as broad, the stria' moderately deep and broad, the 

 interspaces convex, the jnmctures not very deep, large, and circular, in- 

 volving more than the stria>, but not crowded. 



Length of elytron, f)"""; l)rea,dth, 1.7""". 



Roan mountains, western Colorado, from near the richest shales on 

 summit of bluff at head of East Salt creek. One specimen, No. 104, U. S, 



