52 GEOLOGICAL SURVEY OF TEXAS. 



latter the superior tuberculars have no internal cingulum, and the first 

 inferior tubercular is like that of Stenoplesictis. 



In the two superior true molars we have the persistence of an ancient 

 character in this family. 



CANIMARTES CUMMINSII, CopC. 



Sp. nov. Plate XIV, Figures 12-14. 



Represented by the posterior part of the skull and jaws with the accom- 

 panying molar teeth. Apex of paracone of superior sectorial in front of 

 middle of length of crown; base of paracone with a small tubercle in 

 front; no cingula; cingulum of M. i. rounded and thickened, and wider 

 antei'oposteriorly than the middle of the crown. Internal cingulum of 

 M. ii. not so expanded anteroposteriorly as that of M. i. ; protocone the 

 apex of a triangle which includes a central basin. Paracone and raeta- 

 cone of both superior molars lost. Inferior premolar J. with a small conic 

 cusp on the middle of the superior face of the short heel. Inferior sec- 

 torial with the blade a little longer than the heel. Metaconidnot quite so 

 high as the paraconid. No cingula except a low one on internal side of 

 heel. Inferior M. ii. very small, grinding face nearly round, with two 

 low opposite cusps connected by a low transverse ridge. No cingula. 

 Enamel of all the teeth smooth. 



The teeth of this species are about the size of the fisher, Mustela pen- 

 nantii. 



Measurements . 



Mm. 



\ verticHil 7 



Diameters of superior sectorial < 



( anteroposterior 13 



Diameter of M. i superior, anteroposterior 8 



Diameter of M. ii superior, anteroposterior 5 



vertical 10 



Diameters of inferior sectorial \ anteroposterior 14 



transverse 5 



..A. 5 



4 



_^. ,,.,.,, .. S anteroposterior. 



Diameters of interior M. ii < , 



( transverse 



This important addition to our short list of American extinct Weasels 

 was discovered by Mr. W. F. Cummins, to whom I take great pleasure 

 in dedicating it. 



BOKOPHAGUS, Cope. 



American Naturalist, 1892, p. 1028. 



Probably family Hysenidae. Second and probably the first premolars 

 enormously larger than the third and fourth, and consisting of a conic 

 anterior portion and robust posterior lobe and keel. Sectorial with 3, 



