1885.] 



NATURAL SCIENCES OF PHILADELPHIA. 



189 



well-marked internal supplementary columns ; all the lower molars 

 have distinct external columns. In some specimens of the moose 

 there is a small column on the first molar, a slight indication of 

 one on the second, and none on the third ; in others the second and 

 third have small rudimentary columns. This may, perhaps, indi- 

 cate that in this species the columns are in process of disappear- 

 ance, having vanished in the upper jaw from all but the first 

 molar. According to Owen, these columns are present in the 

 upper molars of A Ices (Brit. Foss. Mam., p. 450). This may be 

 true of the Swedish elk, but not of the American specimens I 

 have been able to examine. These supplementary columns do 

 not appear to be constant generic characters, perhaps not even 

 specific, though this latter is doubtful. 



The stylo-lryals are present in the specimen, but are not espe- 

 cially peculiar. 



The Antlers. The most striking peculiarities of Gervalces are 

 to be found in the antlers, which are different from those of any 

 of the Cervidse, recent or fossil, with which I have been able to 

 compare it, or of which I have seen any figure or description. 



Fig. 4. Skull and antlers of Megacerot hibernicut. 



