24 TEETIAKY EHYNCHOPHOHOUS COLEOPTEEA. 



DOCIEHYNCHUS (Soxi?, pv'yxo?), gen. nov. 



A genus of Rhynchitidae comprisiug beetles of smaller size and plumper 

 form than the others in the subfamily of Isotheinte, in which, on account of 

 its general resemblance to them and the character and insertion of the an- 

 tennae, it appears to fall. Of the separation of the coxse 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 

 antennae 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, si;bovate, 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 prothoi-ax 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. 



Itostrum alone shorter than the elytra terebrans. 



Rostrum alone as long as the elytra ciilex. 



Docirhynchus terebrans. 

 PI. IV, Fig. G. 



The head is transversely, regularly, and finely corrugate at base, deli- 

 cately, feebly, and finely granulate in front, the beak with U\o or three 

 longitudinal somewhat beaded carinse; the latter is shorter than the elytra, 

 but with the head equals tliem in length. The ])rothorax 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- 



