240 Scientific Intelligence. 
diameter. We likewise found some additional remains of 
yrachyus agrarius, and better specimens than I before had of 
the larger Hyrachyus eximius. A -preserved last lower molar 
toe 
of a pair of transverse lobes, with sloping sides and acute summits, 
the upper canine teeth, apparently of the most formidable of car- 
sabre-toothed tiger. The more perfect specimen consists of nearly 
nine inches of the enameled crown. its perfect condition the 
character consists in the lance-head-like form of the terminal three 
inches. It is thickened at the axis, and impressed and expanded 
toward the edges, so as to be actually broader in one portion than 
immediately above. e antero-posterior diameter of the crow? 
near its base is two inches; the thickness over an inch. ese 
canine teeth, terminating in lance-like points, must have proved 
most terrific instruments of slaughter. Their possessor was 20 
doubt the scourge of Uinta, and may therefore be appropriately 
named UINTAMASTIX ATROX,. 
