126 TERTIATJY RHYNCHOPHOROU8 COLEOPTERA. 



Length, c-xcludiu-- n.struiu, IrS' ; ro.stmm, 2-4"""; lieiglit of l)<>dy, 



3-25 '"". 



Florissant:, Colonulo. ( >ue species, No. 13(i74. 



( 'T{yPT(^KTIYNC^HlT8 Illiger. 



A verv iiuincroiis genus, with two or three hundred species, sjn'ead very 

 wideh', hut more nuuierous in Auiericii than in all t!ie rest of the world. 

 Enrope lias onl\' a single species, also found in North America, which pos- 

 sesses besides about tifteen species, all of which o<-cur east ot the Rocky 

 niountnins only. 



Three species are rei-orded from the Knrojiean Tertiai'ies, one each at 

 Rott, Aix, and Brnnstatt, but none of them have any spe<aal relationship 

 with the four h)rms from the American Tertiaries, of which two come fronr 

 Florissant, two fr< an the ( b)sinte fauna. These species are p]ace(l in tliis 

 e-enus I'ather as tvpical of the group whose name it bears than in any strict 

 sense. They agree in having a general i-esetnblance to the typical members 

 oi" this yrouj), with a recnrved rosti'um, ratlier small eyes, and no jprominent 

 ])()stocular lobes; the abdominal segments seem to be of nearly unitorni 

 length. 



TaJiJr (if the sprclis of Cri/plorhipicli lis. 



I'mictnatiuii of the thorax very dflicatc, liardly perceptible tJiirus. 



Punctuation of tlie prothorax niederately loarse: tlie puucta, about (».(»45""" in diam- 

 eter; all the stria' equally impressed. 

 Head short, less (or rarely more) than one-third as long as the prothorax; ros- 

 trum as long as head and ]irothorax together l-crri. 



Head reUitively long, generally half as loug as the prothorax; r<jstiuin shorter 



than head and jjrothorax together jirofiisiis. 



Punctuation of the prothorax very coarse, the puucta about 0.(1(1""" in diameter; the 

 striie uneipially impressed ininosns. 



CKVl'r( (KHYNCHUS DURUS. 



I'l. XI, Fig. 8. 



Bodv long oliovate. Head n<jt verv sliort, about one-half the length of 

 the ])r()th(u-ax, apparently (juite smooth; the eyes mo(h'rately large, scarcely 

 oval, ami transverse; rostrum rather stont, gently arcuate, not quite so long 



