503 



2881. The mutilated skull of an American Tapir (Tapir -us americanus). 



There are five molars in place on each side of the upper jaw, and four molars on each side 

 of the lower jaw ; in both of which the last is the first of the true molar series, and the penul- 

 timate is the last of the deciduous series. The germ of the last premolar is exposed above 

 the last deciduous molar on the left side of the upper jaw. The cranial cavity being laid open 

 shows the large and well-defined rhinencephalic fossa and the vacuities on each side the basi- 

 occipital which were occupied by the petromastoid. The crowns of the upper canines are 

 beginning to protrude from their sockets : those of the lower jaw are more advanced. 



Purchased. 



The following, to No. 2932 inclusive, are parts of the same skeleton of an American Tapir: 



Purchased. 



2882. The right radius and ulna. 



Their distal epiphyses have coalesced with each other, but not with their respective shafts. 



2883. The left scaphoides. 2884. The left lunare. 

 2885. The left cuneiforme. 2886. The left pisiforme. 

 2887. The left os magnum. 2888. The left uuciforme. 

 2889. The right lunare. 2890. The right cuneiforme. 

 2891. The right pisiforme. 2892. The right os magnum. 



2893. The right unciforme. 



2894. The innermost metacarpal. 



It answers to the second in the pentadactyle foot. 



2895. The second metacarpal. 



It answers to the third, or digitus medius, in the pentadactyle foot. 



2896. The third metacarpal. 



It answers to the fourth in the pentadactyle foot. 



