44 TERTIARY RHYNCHOPHOROUS COLEOPTERA, 



Roan mountains, western Colorado, from the richest beds at summit of 

 bluffs at head of East Salt creek. Two specimens, Nos. 1009 and 1010, lOGO 

 and 1061, U. S. Geological Survey. White river, Utah, next the Colorado 

 line, from the highest point on the butte. One specimen, No. 906, U. S. 

 Geological Survey. 



Tribe OTIORH YNCHINI. 



Four species of Otiorhynchus, four of Otiorhyuchites, and one of Ne- 

 optocus have been found in our American Tertiaries, all but one (a species 

 of Otiorhvnchites from Florissant) belonging to the Gosiute fauna. None 

 of these "■enera have ever Ijefore been recog-nized in the earlier Tertiaries. 

 The only members of this ti'ibe recorded from the European Tertiaries are 

 five species from the Pleistocene, all regarded as identical with existing 

 forms, and a single species of Laparocerus from diluvial beds in Madeira, 

 mentioned by Heer. 



OTIORHYNCHUS Germar. 



This genus, now the most prolific in forms among all the Rhyn- 

 chophora, numbers its species by the hundreds, almost all of which are ge- 

 rontogeic. North America having but a scant half dozen, some of which 

 are identical with those of the Old World. 



In Europe, the genus has been recognized in a fossil state only in the 

 Pleistocene, Heer and Flach having described three or four species or vari- 

 eties which are regarded as identical with living species. In America we 

 have refeiTed here four species, mostly known (like the European) from 

 their elytra; two of the species occur at Green river and two at the Roan 

 mountains. 



Table of the sj)ecies of Otiorhynchus. 



Elytra exceeding 5"°"' in length. 



Protliorax only a little higher than long ; puncta of the elytra longitudinal perditus. 



Prothorax nearly twice as high as long; puncta of the elytra cirvAilar .subteraetus. 

 Elytra not exceeding 4""" in length. 



Stri;e between the pnnctures distinct and sharp tumbw. 



ytriai between the punctiues indistinct Jiaccus, 



