68 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
slightly shorter than the head, the upper margin strongly curved, the apex 
oblique. Prothorax more than half as high again as long, scarcely taper- 
ing, but little arched above, the surface bluntly rugoso-punctate, heaviest 
above. Klytra with not very feebly impressed punctate striz, the inter- 
spaces faintly punctate. Legs apparently rather short, but none of the 
specimens show them well. Abdomen very finely punctate, the metas- 
ternal episterna very broad. 
Length, excluding rostrum, 3°85"; rostrum, 0-7™"; elytra, 2°5™"; 
height of body, 1:4™", 
Green River, Wyoming. Three specimens, No. 100, Dr. A. 8. Packard, 
from the Fish cut; Nos. 712, 715, U.S. Geological Survey, from the blufts 
behind the town. 
SITONA PAGINARUM. 
Pl. x, Fig. 1. 
The head is short, fully twice as high as long, and smooth; eye circular, 
rather small, removed from the front margin of the prothorax by about halt 
its own diameter; rostrum moderately stout, twice as long as the head, equal, 
rather bluntly rounded at the apex, and smooth. Thorax rather shorter 
than high, truncate at each extremity, with no ocular lobes, very gently 
arched above, the surface very faintly and transversely rugulose. Elytra 
with feebly impressed punctate stria, very gently arched except pasteriorly, 
where they are rapidly declivent. Legs not very stout and rather short. 
Length, excluding rostrum, 6"; rostrum, 1™"; elytra, 4°"; height of 
body, 2”™. 
Roan mountains, western Colorado, in and very near the richest beds 
on the bluffs at the head of East Salt creek. Three specimens, Nos. 182, 
958, 1050, U. 8. Geological Survey. Green River, Wyoming, from the 
a] 
bluffs behind the town. One specimen, No. 726, U. 8. Geological Survey. 
Subfamily ALOPHIN 2A. 
The Alophinze have a remarkable development among the fossils of 
the American Tertiaries, and nearly all the forms belong to extinct types. 
Four genera with fourteen species are recognized and the latter, with but 
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