106 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 50. 



The posterior surface for the calcaneum is concave along its greater 

 diameter; slightly convex along the shorter. The surface for the 

 fibula is nearly plane in its upper part, but convex from front to rear 

 in its lower half. The articular surface for the navicular is concave, 

 but not deeply so. The surface for the cuboid is convex, 



TRUCIFEHS FLORIDANUS (Leidy). 



Plate 28, figs. 1-3. 



In 1889* Leidy described a skull of a saber-tooth tiger to which 

 he gave the name Machairodus jioridanus. This had been secured 

 by Mr. Joseph Willcox, in a limestone quarry at Ocala, Florida. 

 From the same quarry had been obtained other remains which are 

 referred to Equus leidyi, Bison, sp. indet., Odocoileus sp. indet., Dasy- 

 pus sp. indet., Sylvilagus sp. indet., Procamelus minor, and Elephas 

 columbi? All of these indicate that the deposits belong to the 

 Pleistocene. 



From the skull described by Leidy all the teeth were missing; but 

 there were present the alveoli for the upper incisors, the great 

 canine, the third premolar, and the carnassial. This skull was 

 figured in a later paper.^ 



In the Eighth Annual Report of the Florida Geological Survey, 

 on plate 29, figure 8, Dr. E. H. Sellards figured an upper carnassial 

 premolar which had been found at Vero, Florida, in the stratum 

 known in the literature of that locality as No. 2. This he referred 

 (p. 152) to Smilodon. Recently, through the kindness of Doctor 

 Sellards, the writer has been permitted to examine the tooth in 

 question. By comparing the figure of this tooth here presented 

 (pi. 28, figs. 1, 2) with that of Leidy's Trucifelis fatalis* it will be 

 seen that there is between them a close resemblance. It wiU be 

 necessary first of all to determine whether or not the Vero tooth 

 belongs to T. fatalis. The following measurements enable us to 

 make comparisons, those of T. fatalis being computed from Leidy's 

 description'^. In the second column under each tooth is given the 

 ratio of each dimension to the length of the tooth. 

 Dimensions of upper camassials. 



Trucifdisfdtalk 

 type. 



Vero tooth. 



Ijcngth of crown 



Width at inner buttress 



Height of principal cusp.... 



Height of anterior lobe 



Height of front of rear lobe . 



32.8 

 15.6 

 18.7 

 14.6 

 13.5 



100 

 41 



57 



44.; 



41 



100 

 42.5 

 65 

 47.5 

 47.5 



1 Proc. Acad. Nat. Sol. Phila., p. 29. 

 » Sellards, 8th Ann. Rep. Fla. Geol. Surv.. p. 103. 

 ' Trans. Wagner Free Inst. Sei.. vol. 2, pi. 3, fig. 1. 

 • Ext. Mamm. Fauna Dak.. Neb., pi. 28, figs. 10, 11. 

 6 Idem, p. 367. 



