24 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
DOCIRHYNCHUS (6oxis, pu'yxos), gen. nov. 
A genus of Rhynchitidee comprising beetles of smaller size and plumper 
form than the others in the subfamily of Isotheinze, in which, on account of 
its general resemblance to them and the character and insertion of the an- 
tenn, it appears to fall. Of the separation of the coxee nothing can be 
said. The head is not more than half as long as the prothorax, well rounded 
from base to beak, the latter long, rigidly straight, equal, and slender, with 
the head at least as long as the elytra. The eyes are obscurely preserved, 
but apparently small, circular, and situated next the base of the beak. The 
antenne are slightly longer than the prothorax, seated slightly within the 
middle of the basal half, the first two joints a little stouter than the follow- 
ing, equal, subovate, hardly twice as long as broad, the succeeding up to 
the club slender, cylindrical, equal or subequal, more than twice as long as 
broad, and scarcely longer than the basal, the last three twice as broad, 
scarcely longer than broad, subquadrate, forming a loose subcylindrical 
club. The prothorax is higher than long, even; the elytra well arched, the 
sculpture longitudinally disposed; the legs slender and not very long. The 
metasternum is long, the pygidium apparently exposed. 
Two species are known, both coming from Florissant. 
Table of the species of Docirhynchus. 
Rostrum alone shorter thanithe elytra... 5422 ae tele ieeeieleliee ieee terebrans. 
Rostrum alone‘as long as) theielytraje.s.- oe een coe eae ee teseer culex. 
DocIRHYNCHUS TEREBRANS. 
BD Take +) . 
Pl. iv, Fig. 6. 
The head is transversely, regularly, and finely corrugate at base, deli- 
cately, feebly, and finely granulate in front, the beak with two or three 
longitudinal somewhat beaded carinze; the latter is shorter than the elytra, 
but with the head equals them in length. The prothorax is uniformly, 
densely, and somewhat finely granulate, as are also the sides of the meta- 
sternum, though here they are longitudinally disposed by merging in longi- 
