OTIORHYNCHID®. 29 
Length, excluding rostrum, 43™"; height, 1:5™"; length of rostrum 
ue & ? ? & b] ? ’ 
iy nm 
Roan mountains, western Colorado, in the most prolific beds close to 
) ) ] 
the summit. One specimen, Nos. 1015 and 1016, U.S Geological Survey. 
i ’ D Colos J 
Named in honor of the distinguished Bohemian paleontologist, the late 
Joachim Barrande. 
Mamily OPlLORE YINCHID 7h. 
The Otiorhynchidz are well represented in the American Tertiaries, 
the numerical preponderance of the species having then been much more 
than double what it is now. But the most striking fact is its importance 
for the Gosiute fauna, where 15 genera and 32 species occur, against 10 
genera and 14 species at Florissant. Excepting in the Scolytide, which 
have but 4 species in the western Tertiaries, and are thus relatively insig- 
nificant, no other family shows a preponderance of forms in the Gosiute 
fauna; and as the preponderance is here very marked we may fairly regard 
the Otiorhynchidz as thoroughly characteristic of this fauna. It is a fur- 
ther curious fact that the Florissant Otiorhynchidee are mostly made up of 
members of different tribes from the others, the Evotini and Promecopini 
belonging exclusively, or almost exclusively, to the Lacustrine fauna, while 
the Tanymecini, Cyphini, and Phyllobiini are exclusively, the more nu- 
merous Ophryastini and Otiorhynchini almost exclusively, Gosiute; the 
Brachyderini alone are divided equally between both. No other family of 
Rhynchophora shows in so striking a manner a division of tribes between 
the two principal horizons of the western Tertiary insect beds, and it is 
therefore probable that the fossils of this family may in the future furnish 
the best indications (as far as Rhynchophora are concerned) of the horizon 
of future insect localities in the West. 
In Europe the number of genera and species is far less than in 
America, and the tribes Ophryastini, Evotini and Promecopini, having in 
America fully two-fifths the genera and nearly half the species, do not 
appear to occur at all, nor do any tribes occur in Europe which are not 
found in America, excepting the extinct tribe Pristorhynchini, which is rep- 
resented by a single species. Kven in the tribes that are the same the 
