0. C. Marsh — Recent Polydactyle Horses. 



343 



phalanx and its sesamoid. In other respects, the limbs were 

 well shaped, and in fair condition for so old a horse. 



After the death of the animal, a careful dissection of the 

 feet was made, and several points of interest became apparent. 

 First of all, in the fore feet, the presence of the first digit 

 was demonstrated by a robust," splint metacarpal about half the 

 length of the main cannon bone. This splint was supported 

 above by a large trapezium having the usual articulations of 

 that bone in its full development. The first digit, as present 

 in the left foot of this horse, is shown above in figure 3. In 

 the opposite fore foot, this digit is also represented, and equally 

 developed, as seen in figure 8. 



Figure 6. — "Eight-footed Cuban horse," with extra digit on each foot. 



The second metacarpal of the left fore foot is quite large, 

 and fully developed above and below, but its shaft is coossified 

 with the main metacarpal. The line of the suture uniting the 

 two is still strongly marked, as shown also in figure 3. The 

 phalanges and sesamoids are all well developed, and had this 

 toe been long enough to reach the ground, it would have 

 afforded a strong lateral support to the main digit. The latter 

 possesses no marked peculiarities except that the outer side is 



