NIMEAVIDiE, 973 



inferior canine tooth, while in N. gomphodus it continues for one diameter 

 of the canine behind its posterior border. 



The crown of the inferior canine tooth is directed backwards, and its 

 serrate cutting edge is presented almost entirely inwards. The interno- 

 anterior face of the crown is flat, and has a low shoulder at the base. The 

 molars have the proportions of those of N. gomphodus, differing only in 

 their smaller size, which is very apparent, as can be seen by the measure- 

 ments. The first (third) premolar is a little longer on the base than high, 

 has no anterior tubercle, and has a short cutting basal heel. The fourth 

 premolar has subequal anterior and posterior basal cutting lobes, and the 

 base is longer than the elevation of the median cusp. The sectorial tooth 

 has a short cutting heel, but no trace of inner tubercle. The anterior lobe 

 is as long as the median, but not so high. It overlaps the fourth premolar 

 as far as the base of the median cusp. No incisor teeth are preserved in 

 the specimen. Tubercular small. 



Meas^irements of ukull. 



M. 



Depth of ramus at diastema 020 



Depth of chin 027 



Elevation of inferior canine 016 



Diameter of inferior canine at hase 010 



Length of inferior diastema 014 



Length of inferior molar series 053 



Length of third premolar 014 



Elevation of third premolar 010 



Length of fourth premolar 016 



Elevation of fourth premolar 013 



Length of sectorial 022 



Elevation of median cusp of sectorial 015 



Although a left mandibular ramus is all that I have been able to obtain 

 of this cat, the evidence is sufficient that it is specifically different from the 

 others enumerated in this chapter. It is inferior in size, and peculiar in the 

 reduced symphysial and incisive parts of the mandible. It was found by 

 Mr. Wortman in the bad-lands of the John Day Valley, Oregon. 



DINICTIS Leidy. 



Proceed. Philada. Academy, 1654, p. 127. Extinct Mammalia of Dakota and Nebraska, 1869, p. 64. 



With this genus we enter tlie group of the primitive saber-tooths, com- 

 mencing with the most generalized form. The skeleton is yet unknown, 



