122 TERTIARY RHYNCHOPHOKOUS COLEOPTERA. 



Tribe ClONINI. 



This tribe of CuiTulioiiiiui' is l^etter representc'(l in tlie European Ter- 

 tiaries than in our own, at least in ffeueric forms. In Europe \ve find the 

 g-enera (iymnetron, one speeies at Brunstatt, Nanopliyes, one species at 

 Rott, and Cionus at Aix, where 8erres recognizes but does not d(^scril)e two 

 species (( )usta]et, liowever, in liis study of tlie Aix ( 'olcoptcra, (h»es not 

 recognize the genus). In iVnu'rica uc have only two sjjecies of the tirst 

 named genus, Gymnetron, one found at Fh>rissant, the other at Green Hiyer. 



GYMN ETKOX Schonherr. 



Gymnetron is ahnost exchisively a European and Mediterranean genus, 

 aoundant in forms, the single known American species being of pAU'opean 

 origin. Tt has been found in the European Tertiaries at Hi'unstatt, and in 

 this country two species occur at Florissant and at (ireen Kiyer; the 

 Euro])ean Tertiary species, G. rdtiiiidicolU: P^urster, has only a general re- 

 semblance to ours, and is of about the size of our G. lecontei 



Table of the xiHcics of (Ti/mitetron. 



Rnstinm only as loiiff as the jnotliorax antecurrens. 



Rostrum longer thau the licail and iiiotboiax togctLer lecontei. 



Gymnetron antecurrens. 



PI. VI, Fig. 14. 



A single' specimen seems to reseml)l(' not a little our well known G. tetcr 

 Fabr., but is m(»re coarsely marked. The head is fully twice as high as 

 long, not heavily, but almost coarsely punctate; the eye large, oval, trans- 

 vei'se, ])ointcd Ixith al)oye and Ixdow, as far removed as ])ossible from the 

 ])rotliorax; beak almost straight, very slender, as long as the ])rothorax. 

 Prothorax coarsely and denseh' punctate, ta])ering a little from the base, 

 somewhat more than half as high again as long. Under surface coarsely, 

 lieavily punctate, but less densely than on the thorax. Elytra with sharply 

 detiued, slender striae with faint signs of punctuation, the interspaces flat 

 with feeble indications of shallow punctuation. 



