12S TERTIARY RHYNCHOPHOROUS COLEOPTERA. 



al)l\' hi-ojidcr iit base than the thorax, with the .same scul])tiiriiij4- as in the 

 preciMliiiii' s|)cci('s, with wliicli I liad at iirst associated it, l>iit tVom wliicli it 

 seemed best to separates it on account of tlie relative!}' shorter prothorax 

 ami snout. 



Leii<itli, excluding- rcstiMun, 2\S""'; rostrum, ((■7""": liei;;lit ot" body, 

 1")""": widtli at base of protliorax, l-l"""; at middle of elytra, llj""". 



Florissant, Colorado. Seven specimens, Nos. 475, 1222, 2148, ,3322, 

 5386, 5655, S624 and 11104. 



Crvptorhynchus annosus. 

 PI. XI, Fiy-. 10. 



Cri/iitorhi/nrhiis onnosiis Sciidd., l!ull. V. S. Geol. Geojir. Sinv. Terr., II, 8<i-S7 (1876); 

 Tert. Ins. N. A., 471, PI. Vlil, Fij;-. ."> {18!H)). 



Better specimens of wliat appeal' to be this species, though cominy from 

 different localities from the t)'])e, show tliat the body is of a compact elon- 

 gate oval form, the head wry short, apparently smootii or onl\- finely 

 punctate, with a mo(lerate-sizeil circular eye, the rostrum completely con- 

 cealed on a si(U' view. The thoi'ax is uearK' half as hiii'li aj^'ain as long, 

 unifonnh" and profusely jiunctate, as described, 'i'lic elvtra ai'e no broader 

 at liase tlian the thorax, giving a, gentlv uniform arcuation to the dorsal 

 cin-ve, long, narrow, gentlv tapering to an acuminate apex. 



Length of body, ;V2""": elytra, 2;2'"""; height, 1-4""". 



Roan mountains, ^^'estern Colorado, from the richest l)eds at top of 

 bluff overhanging head of East Salt creek. One specimen, No. !I47, U.S. 

 (Tcological Sinvey. White river, Colorado, from the lowest shales next the 

 bed of the river, about 3 mih's from tlie Utah liorder. ( )ne s])ecimen, No. 

 54!t, U. S. Geological Survey. The original was fnmi (ireen Kiver, Wy- 

 oming. 



Tribe CEUTHORH YNCHINI. 



Tliis tribe of ( 'urcuHonina' is \ev\ similarly repi'esented in tiie older 

 Euroj)ean and American Tertiaries; foi- in America we have a single 

 species of CSeliodes and 5 of Ceuthorh\ nchus, all fi-om Florissant, ex- 

 cepting one .species of the latter genus from the Koaii mountains; wdiile in 



