CURCULIONIDA—C URCULIONIN &—CRYPTORHYNCHINI. 123 
Length, excluding rostrum, g==. rostrum, 0°07"; height of body, 
1:65=™ 
Florissant, Colorado. One specimen, No. 4496. 
GYMNETRON LECONTEI. 
Gymnetron lecontei Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., Iv, 7 67 (1878); Tert. 
Ins. N. A., 471-472, Pl. vit, Fig. 26 (1890). 
Named for the late Dr. John L. LeConte, of Philadelphia, whose works 
on the Rhynchophora of this country have formed the substantial basis of 
the present monograph. 
It is doubtful if this be a Gymnetron; its depth of body is too great, 
in that respect, at least, resembling rather a Mononychus. No further 
specimens have been obtained. 
Green River, Wyoming. 
Tribe CRYPTORHYNCHINI. 
This tribe, so well developed in the recent American fauna, is relatively 
very unimportant in the Tertiaries. In Europe the genera Aealles and 
Chaleodermus, with one species each at Rott and at Kutschlin, are all that 
have been recognized, excepting three species of Cryptorhynehus at Aix, 
Rott, and Brunstatt. In America we have also three genera, but as many 
as seven species, four of them referred to Cryptorhynchus, in equal num- 
bers from the Lacustrine and the Gosiute faunas; one, from the Roan 
mountains to Rhyssomatus, and two, from Florissant, to an extinct genus, 
Rhysosternum. 
RHYSSOMATUS Schonherr. 
An American genus especially abundant in the tropics, but of which 
North America possesses five species, mostly confined to the southern states. 
A single species has been found fossil in the Roan mountains, Colorado. 
fo) } 5] 
RuHYSSOMATUS TABESCENS. 
z Mine iC 
Pio Bigs 2: 
A single elytron from the Roan mountains is so different from anything 
else yet found in tertiary deposits that I venture to describe and provision- 
