CURCULIONIDAZ—CURCULIONIN &—HYLOBIINI. 89 
from Aix and Corent; and Pissodes, two species from Sieblos and Brunstatt. 
In the American Tertiaries we have found seven species, mostly confined 
to the Gosiute fauna: Pachylobius with three species from White river, 
Green River, and Roan mountains; Hylobius with three species, two from 
Green River and one from Florissant; and an extinct genus, Laccopygus, 
with a single species from the Lacustrine fauna at Florissant. 
PACHYLOBIUS LeConte. 
A North American genus of only one or two species, confined to the 
Southern states. Three species have been found in our Western Tertiaries, 
and being apparently peculiar to the Gosiute fauna, may be regarded as 
one of its typical forms. 
The three species from the Rocky mountain Tertiaries here entered 
under Pachylobius are so placed from the close resemblance of their elytra 
and from the structure of the body of the first of them, which accords well 
with that of this genus. Here the head, forced beneath the thorax, can 
only be seen to have rather large, oval, low-placed eyes, a relatively long, 
moderately stout beak with scrobes running with little obliquity to the eyes, 
asomewhat tumid prothorax hardly if at all longer than broad; the middle 
coxze are slightly separated, the hind coxze much further removed from each 
other, the first abdominal segment sending a triangular process between 
them; the metasternum has a slight blunt median carina barely flanked by 
slight carine; the suture separating the first and second abdominal segments 
is considerably arcuate in its middle half; the third and fourth abdominal 
segments are together considerably longer than the mass of the second, and 
the fifth is relatively short. Not all of these characters distinguish Pachy- 
lobius, so that it is questionable whether the reference can be strictly made. 
Table of the species of Pachylobius. 
Elytral strie hardly impressed; ninth stria distinctly punctured. ...-....-. deleticius. 
Elytral stri deeply impressed; ninth stria impunctured, or nearly so. 
Elytra less or not more than two and a half times longer than broad; punctures 
Gerri Ske deena Aee cs osHde a Soar eb eoege ded peo socae anor compressus. 
Elytra nearly three times longer than broad; punctures coarse, especially at 
[SEES se ogigpososec Bo ntie 6608 badodasS hog bcoboRonTHoocaanecacouE depredatus. 
