OTIORHYNCHID.E—PROMECOPINI. §1 
mingling of parts. The head, however, is rather large and the eyes rather 
large, circular, prominent, and well separated from the thorax; head, beak, 
and thorax all equally granulated. Thorax cylindrical, as long as high. 
Elytra from two to three times as long as broad, very regularly and uni- 
formly arched with distinet and sharp strize which are plainly nearer each 
other at the base than in the middle of the elytra, with small, distinct, and 
deep circular or slightly elongated punctures-separated by about their own 
gon the reverse like beads on the wires of an abacus. 
diameter, lookin 
Length of head and thorax, 1:5"; of elytra, 2""; height of body%n 
middle of elytra, 1". 
White river, western Colorado, from the upper half of Canyon butte. 
One specimen, No. 586, U. 8. Geological Survey. 
iribe! -PROMECOPINI: 
Excepting a EKudiagogus which occurs in the Gosiute fauna, all the 
other members of this tribe in the American Tertiaries are confined to 
Florissant; they are but three in number, but they belong to two distinct 
genera, both of which are extinct. 
I have placed in this tribe several species which seem nearly allied 
and which from the visible structure of the mesothoracie epimera of some 
of them appear to fall in the second division of the family. The eyes being 
transverse and the ocular lobes very large indicate that they fall in the 
present tribe, a strictly American group, all the living members of which, 
according to Lacordaire, are of small size, and as far as their general ap- 
pearance goes, very homogeneous. Some of the forms placed here are, 
however, far more robust than the living types and of considerably larger 
size than the largest of them. 
Table of the genera of Promecopini. 
Body stout, not more than twice as long as broad. 
] > 
Rostrum relatively slender, eyes as broad as rostrum; second abdominal segment 
© a >] > 
longerithanw ther two) t0llowiney re eee ccs = een oe aie ee Eudomus. 
5 5 
Rostrum relatively broad; eyes narrower than rostrum; second abdominal seg- 
ment not longer than the two following......-.-......--.--.--- Hucryptus. 
dy slende 5 ore the ACOAS LON Oo TASH OLOAGme se ole ee sle cto dia ‘. 
Body slender, much more than twice as long as | 1 Budiagogus 
