132 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
Tribe CIONINI. 
This tribe of Curculioninz is better represented in the European Ter- 
tiaries than in our own, at least in generic forms. In Europe we find the 
genera Gymnetron, one species at Brunstatt, Nanophyes, one species at 
Rott, and Cionus at Aix, where Serres recognizes but does not describe two 
species (Oustalet, however, in his study of the Aix Coleoptera, does not 
recognize the genus). In America we have only two species of the first 
named genus, Gymnetron, one found at Florissant, the other at Green River. 
GYMNETRON Schonherr. 
Gymnetron is almost exclusively a European and Mediterranean genus, 
aoundant in forms, the single known American species being of European 
origin. It has been found in the European Tertiaries at Brunstatt, and in 
this country two species occur at Florissant and at Green River; the 
European Tertiary species, G. rotundicolle Forster, has only a general re- 
semblance to ours, and is of about the size of our G. lecontei. 
Table of the species of Gymnetron. 
Rostrum only as'long as!the prothorax. ==) 3525654542 eee eee eee antecurrens, 
Rostrum longer than the head and prothorax together........-....-.-..----- lecontet. 
GYMNETRON ANTECURRENS. 
Pl. vi, Fig. 14. 
A single specimen seems to resemble not a little our well known G. teter 
Fabr., but is more coarsely marked. The head is fully twice as high as 
long, not heavily, but almost coarsely punctate; the eye large, oval, trans- 
verse, pointed both above and below, as far removed as possible from the 
prothorax; beak almost straight, very slender, as long as the prothorax. 
Prothorax coarsely and densely punctate, tapering a little from the base, 
somewhat more than half as high again as long. Under surface coarsely, 
heavily punctate, but less densely than on the thorax. Elytra with sharply 
defined, slender strize with faint signs of punctuation, the interspaces flat 
with feeble indications of shallow punctuation. 
