56 GEOLOGICAL SURVEY OF TEXAS. 



second metacarpal is not so convex anteroposteriorly as those of the third 

 and fourtli, and is openly grooved in the same direction, which is not the 

 case with the others. The distal trochlear keels are acute. 



There are no phalanges of the first row preserved, and hut two of the 

 second. They are rather elevated at the middle of the proximal extrem- 

 ity, while the shaft is depressed more toward one side than the other. 

 The distal face has an arc of 180 degrees, and is openly emarginate in the 

 longer phalange, but truncate in a short one. The long phalange is rela- 

 tively longer than in any feline animal known to me, equaling two-fifths 

 of the longer metacarpals. 



The calcaneum has lost the extremity of the tuber, but is otherwise 

 complete. It is wider at the sustentaculum than is usual in digitigrade 

 carnivora, while the ectal facet is directly in the line bisecting the cuboid 

 facet and the tuber. External cuboid tuberosity moderate; cuboid face 

 semicircular, with a fossa on the inner border. The second metatarsal is 

 equal in length to the second metacarpal, but is more slender. Its head 

 is openly grooved anteroposteriorly, and displays on the inner side two 

 longitudinal facets separated by a groove. Each facet shows two faces, 

 one for the magnum and the other for the third metacarpal. 



Measurements. 



Mm. 



Length of superior canine (apex restored) 60 



Diameters at base of crown \ ^ 



^ transverse 11 



Length of crown of superior canine (apex restored) 24 



Length of unciform 13 



-r,. . 1 ,. , , ., ( anteroposterior 12 



Distal diameters of unciform J, '^ 



i transverse 14 



i anteroposterior 12.5 



longitudinal 9 



transverse 0.5 



Length of second metacarpal 50 



Length of third metacarpal ' 61 



Length of fourth metacarpal 61 



Proximal transverse diameter, M. c. ii 11 



Proximal transverse diameter, M. c. iii., with diaclast 10.5 



Proximal transverse diameter, M. c. iv., with diaclast 11 .5 



Transverse diameter of shaft, M. c. ii — 7.5 



Transverse diameter of shaft, M. c. iii 8 



Transverse diameter of shaft, M. c. iv 8.5 



Distal diameter above condyle, M. c. ii 11-5 



Distal diameter above condyle, M. c. iii 11.5 



Distal diameter above condyle, M. c. iv 12 



Length of calcaneum from ectal to cuboid facet inclusive 23 



Width at sustentaculum 22 



-^. , , .J . i. (anteroposterior 11 



Diameters cuboid facet J '^ ,, 



) transverse 12 



Depth calcaneum at ectal facet .- 21 



