16 TERTIARY RHYNCHOPHOROUS COLEOPTERA, 



each end, as broad as long, and preceded by long iuid slender joints, that 

 just preceding the cnneiform joint a little enlarged at the apex. Thorax 

 poorly preserved, but apparently a little granulated. Elytra too poorly 

 preserved for definite description, not very strongly arched. Hind tibiae 

 scarcely stouter than the antennal club. Abdominal joints very sparsely 

 granulate. 



Length, exclusWe of rostrum, S-'i""; of rostrum, 2-85°"": of 

 antennse, 21°"°. 



Florissant, Colorado, one specimen. No. 13682. 



The species does not appear to agree well with any of the described 

 fossil species of Rhynchites most of which, indeed, as already stated, must 

 be removed from the genus; and from our modern species it appears to 

 differ in its relatively much broader thorax. 



Subfamily ISOTHE1N.C 



The genera belonging here, and especially those of the first tribe, 

 have all the aspect of Calandrida^, with their elongate form, porrect ros- 

 trum, and subconical head; but the relatively great head, ungeniculated 

 antennae, the loose club of the same, the four-jointed tarsi, and the subequal, 

 completely delimited segments of the abdomen prevent the possibility of 

 any such reference. 



They are peculiar among Rhynchitidw for the moderate separation of 

 the fore and middle coxa? and the insertion of the antenna?, which is before 

 the middle of the basal half of the straight and porrect l^eak. These char- 

 acters show an approach to the Pterocolinfe rather than to the Rhynchitida?, 

 but they have narrow metasternal side pieces. It seems fitting, therefore, 

 that they should be separated as a distinct subfamily. 



To judge only from the descriptions and figures of the species of fossil 

 Rhynchitidfe already described it is highly probable that several of them 

 also may fall in this same subfamily, for the two species of Rhynchites 

 described from Rott by Heyden, B. liageni and R. orcinus, have the anten- 

 na attached at the very base of the rostrum, showing, at least, that they 

 can not properly be placed in Rhynchites, and the same is the case with the 



