130 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 



CEUTHORHYNCHUS Clennar. 



A prolific genus with a couple <:if hundred species, almost exclusively 

 confined to the Old World. We have, however, nearly twenty species in 

 North America, widely distributed. Four species have been found in the 

 p]uropean Tertiaries and five in the American, almost confined to and 

 somewhat characteristic of the Gosiute fauna, only one of the species 

 occun-ing elsewhere. The European species mostly occur at Brunstatt, C. 

 ohUquus Forster being very chtse to our (J. couipKcta^;, but the species from 

 Rott bears no special resemblance to any of tlie American species. 



Tabic of the KiH'ckfi of Ccufhorhynchus. 



Base of elytra scarcely or not at all wider thau the thorax. 



Body twice as long as broad, the general form relatively long oval. 



Prothorax nearly or quite twice as high as long ; i-ostrum shorter than head 

 and thorax together. 

 Prothorax fully twice as high as long, verniiculate; rostrum stont.cvinctus. 

 Prothorax nearly twice as high as long, punctate; rostrum relatively 



slender clausns. 



Prothorax hardly more thau half as high again as long; rostrum longer than 



head and thorax together ditraiiin. 



Body much less than twice as long as broad, the general form relatively short 



oval compactu^. 



Base of elytra much wider than base of thorax degravatus. 



Ceuthorhynchus evinctus. 



PI. XI, Fig. 13. 



Head broad but short and not very full, not very finely but densely 

 punctate; eyes large, very broad ovate, transverse, midway in height: 

 rostrum stout, gently and regularly arcuate, a little longer than the pro- 

 thorax, finely and feebly striate. Prothorax without postocular lobes, fully 

 twice as high as long, roundly but feebly tapering from the base, beneath 

 very full, the surface coarsely verniiculate. Under side of thorax very 

 'coarsely and somewhat sparsely but distinctly jiunctate, of the abdomen 

 feebly punctate. Elytra with alternate costaj and sulci, the latter deeply 

 and distantly pierced with more or less longitudinal pn ^cta. 



