500 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



fragments. P3 is present on the right, Mi on the left, and the left 

 lower canine is perfect. The incisors have all been broken off. The 

 sagittal crest of the skull had been chewed away by rodents and had 

 to be restored according to its dimensions in No. 1. Both occipital 

 condyles and petrosal bones are present, and the left tympanic bulla 

 and zygomatic arch are complete. As finally reconstructed the skull 

 is sufficiently complete to allow all measurements referred to in this 

 paper to be taken from the authentic parts without having to trust 

 any "restorations." 



All vertebrae are represented in No. 2 except the seventh lumbar, the 

 sacrum, and the caudals. As for the pectoral appendage, only the 

 humerus and the glenoid border of the left scapula are preserved. 

 The pelvic appendage is complete on the left down to the middle of 

 the ankle. There are no cuneiforms, metatarsals, or phalanges. Ribs 

 exist only in numerous fragments. 



Together these two finds include all parts of the skeleton except the 

 intermediate and distal caudal vertebrae, the seventh lumbar vertebrae, 

 the clavicles, the hyoid apparatus, the sternum, the crowns of the 

 incisor teeth, the upper canines (present in No. 2, but splintered), and 

 the second premolars of the upper jaw. 



EXTENT OF PREVIOUS DISCOVERIES 



In 1872 and 1873 Professor Leidy announced the discovery of a 

 supposed new species of great Pleistocene cat, which he named Felis 

 augustus. The type specimen was a left P^, which had been collected 

 by Hayden on the Niobrara River in Nebraska, and which Leidy de- 

 clared to be "too large to have belonged either to the panther or the 

 jaguar" and "too small to have belonged to the extinct American Lion, 

 or Felis atrox^"^ There was another tooth in this collection not figured 

 or described by Leidy but since then attached by someone else to the 

 fragment of maxilla in the type specimen where it obviously belongs, 

 and these are now cataloged as specimen No. 125 in the United States 

 National Museum. 



Leidy also mentions and figures the distal end of a humerus collected 

 by Hayden at the same time and place (though not definitely associated 

 with the teeth) and assigns it tentatively to the same new species. 

 (The humerus fragment is now U.S.N.M. No. 147.) This assignment 

 is definitely a mistake. We have examined it carefully and are certain 

 that it cannot have belonged to the same individual or species from 

 which the teeth came. Now that we have associated skeletons of cats 

 with teeth of approximately the same size, it is easy to see that the 

 humerus fragment is altogether too large. Unfortunately it does not 



