48 TEKTIAKY liUYNCnOPllOliOUS COLEOrTEEA. 



the others subcirciilar, a, litthi eh^iigate, deeply impressed; interspaces 

 strongly (-onvex, almost ridged, especially on the inner tliird. 



Length, S-S"""; breadth in middle, 2-5"'". 



Fossil, Wyoming. One specimen, No. 564, U. S. Geological Survey. 



Otiorhynchites commutatus. 

 PI. IX, Fig. 9. 



A single fragment of an elytron is provisionally placed here, simply as 

 typical of the family. It differs very nnicli from anything else seen in the 

 exti-eme heaviness of the markings. The l^ase is ))roken off. It represents 

 a pretty large beetle of a stout form. The elytron is slightly arcuate, nar- 

 rows only on the a])ieal third, and is liroadly rounded posteriorly with a 

 rectangular apex. There are nine series of very large, rather strongly but 

 not sharply depressed rectangular or slightly longitudinal punctures, giving 

 the appearance of broad, rather deep sulci, bridged by rather narrow, 

 distant, transverse carina^. 



Length (jf fragment, 4-75"""; probable length of elytron, 5-5°""; breadth, 

 2-5""". 



Roan mountains, western Colorado, from the richest beds at summit 

 of bluffs overlooking head of East Salt creek. One specimen. No. 189, 

 U. S. Geological Survey. 



NEOPTOCUS Horn. 



A single Floridian species represents this genus, to which with some 

 doubt I have referred a fossil from the Roan mountains and White river of 

 western Colorado. 



Neoptocus ? sp. 



PI. IX, Fig. 6, 



A couple of specimens showing very short, and broad elytra, rapidly 

 descending behind, are referred here provisionally. It is quite possible they 

 do not belong together. One specimen shows also the thorax, which is very 

 short and broad, nearly or quite as Inroad at base as the elytra, tapering 



