ciucn.ioMD.i': — ciKcii.ioNiN.i: — I'IIvi'onomini. s7 



Here it will readily be seen that the {•reatest and the mily cnuspicuous 

 difterences between the AiiMiicaii ;nid Hnropean 'l\'rti;iriis lie, dii the one 

 side, in the ( 'Icdiiiiii, wliicli cniitaiii iicarK' mic-tliird of the Onrfulidnina- of 

 the European deposits, and hardly more than 7 per cent of those of tlie 

 Aincrican: and on the other side, in the Authoiioiiiini, whii-h do not exist at 

 all in the Knroj)ean Tertiaries, l)ut form nearly onc-foiirtli of the American 

 TertiarN- Curcnlionina', and in the Harini, which comprise nearly IG ])er cent 

 of the American Curcnlionina' and hardly 3 per cent <A' the European. No 

 such striking ditiereuces appear in comiiaring- the numerical preponderance 

 of the tribes in the recent and fossil Curculioniih-e of North America, the ' 

 jrreatest disparitv apjjearing in the reverse proportions of the Anthonomini 

 and the Crvptorhynchini, the former heiny relatively more than twice as 

 important in the Tertiaries as now, the latter more than twice as important 

 now as in the Tertiaries, and in the Ilylobiini, where the fossils, thouofh not 

 numerous, formed 10 per cent of tlie total fauna in Tertiary times, while 

 thev hold only one-fourth of that j)erceutage in the existing fauna; a rela- 

 tion again nearly reversed in a group of greater importance in recent times, 

 the Phytouoraiui, where the percentage to the whole fauna is now nearly 

 three times jn*eater than it was in Tertiary times. In all other cases the 

 difference between recent and Tertiar\' times, where the trilie was rejjre- 

 sented at all, is insignificant. In all these cases of distinction between the 

 recent and Tertiar\ representation, excepting oidy in the Phytonomini, the 

 disparity would have appeared still greater if the Tertiary Curculioniiue of 

 Ein-oi)e had been compared with the recent fauna of North America; from, 

 which we may conclude that as far as the Curcnlionina' are concerned, the 

 Tertiary fauna of America shows (doser relationshi]) to the existing Ameri- 

 can famia than does the European Tertiary fauna. 



Tribe PH YTONOMINI. 



Two genera of this group, I'liytonomus and Ilypera, two .species of the 

 former, one of the latter, have l)een recognized in the European Tertiaries 

 in the ( lligocene of Aix, Provence: in the American Tertiaries, twos])ecies 

 have been found, one each of' Lep\ rns ami Listronotus, in the Green River 

 dei)osits. 



