118 TERTIARY EHYNCHOrHOROUS COLEOPTERA. 



and the interspaces also fecl)ly punctate. Beneatli, tlie l)ody is punctate 

 like the thorax, but inuch more sparsely. 



Length, excluding rostrum, 3-35°""; probable length of rostrum, U-S"""; 

 height at middle of elytra, IT"™. 



Florissant, Colorado. One specimen, No. 5145. 



MACRORHOPTUS LeConte. 



This genus is founded on a single species from Texas and California. 

 One species has been found fossil at Florissant. 



Macrorhoptus intutus. 

 PI. VI, Fig. 5. 



To this genus I refer a single species with large transversely oval eyes, 

 not closely approximate above, but so closely as to make the front narrower 

 than the beak, with obtuse hind angles to the prothorax, and with all the 

 aspect and structure of one of the Anthonomini. The head is about half as 

 high again as long, with a finely jmnctate surface; the beak is somewhat 

 longer tlian tlie prothorax, somewhat arcuate and equal; the antennal serobe 

 scarcely attains the eye, and is apparently inserted slightly beyond the 

 middle of the beak; the funicle and club together are slightly Imiger than 

 the scajjc, and slender, the Hnal joints of the funiculus grachially enlarging 

 to the gentle club, nuich as descril)ed for M. rstrhifns Lee, Imt slenderer. 

 Thorax uuu'h nmre than half as high again as long, well rounded, not taper- 

 ing greatly, ratlier coarsely punctate. Elytra fully twice as long as broad, 

 subequal, except a])icallv, punctato-striate, the interspaces feebly and finely 

 punctulate. 



Length, excluding rostrum, 4-5'"'"; rostrum, M"""; lu'lght of body, 2°"". 



Florissant, Colorado. Five si)ecimens, Nos. 45!»3, .S254, ill 711, 13016, 

 13622. 



Tribe PRIONOMERINI. 



This small tribe, unknown in the Old World, whether in recent or 

 Tertiary times, is represented in our Tertiary deposits by a single species 

 of Prionomerus at Florissant. 



