Cope.] 440 [May 19. 



specimens. In the manus of a Ilyrax capemu^ (Irom V.ei'i'caux, Paris), I 

 tincl the following condition of the carpus. The bones of the two series 

 are articulated consecutively, and not alternately ; they do not interlock, 

 but inasmuch as the magnum is a little narrower than the lunar, the latter 

 is just in contact (anteriorly) with the trapezoides (centrale) on the one 

 side, and the unciform on the other. My specimen agrees with Cuvier's 

 figure of Hyrax capensis in all respects. It is probable that Professor 



li : 



Fig. 2. 



Fig. 2.— Left anterior foot of Phenacodus primcevus, one-third natural size 

 (original). 



Fig. 3.— Right anterior foot of Hyrax eapensis ; (from Cuvier). iSfl. scapuloid 

 bone; i. lunar; cu. cuneiform ; p. pisiform; tz. trapezium; td. trapezoides; m. 

 magnum ; u. unciform. 



Flower has figured some other species under that name, which besides its 

 peculiarities, is of smaller size than the H. capensis (see Fig. 3). 



In April, 1875* I described the. manus of Coryphodon (Bathmodon), 

 showing that the lunar was supported below by the'magnum and by parts 

 of the unciform. This carpus has the characters of that of Hyrax capensis, 

 with the last named articulation more extensive. This was the first 

 description of the carpus of the AmUypoda. In February, 1876, •)• Pro- 

 fessor Marsh described the carpus of TJintatherium (Dinoceras), and 

 asserted that the bones "form interlocking series." He however 

 states that "the magnum is supported by the lunar and not at all 

 by the scaphoid, " a state of things which does not belong to the inter- 

 locking carpus. The trapezoides does not join the lunar, but the unci- 

 form does so, as in Coryphodon: Professor Marsh's figure as to thearticu- 



* Sj'stematic Catalogue of the vertebrata of the Eocene ol Xow j\t«'\lco. p. 24 

 (U. S. Geol. Survey W. of 100th Mer.). 

 t Amer. Journal Sci. Arts, xi, ]). 107 ; pi. vi., flg. 2. 



