130 R. S. Lull — New Tertiary Artiodactyls. 



it is small or rudimentary, which applies very well to 

 the female horn of Aletomeryx. 



Matthew's opinion, expressed verbally (December, 

 1919), is that Aletomeryx has for its nearest known rela- 

 tive Merycodus, despite the fact that the latter bore a 

 branched antler. The similarities are based upon skele- 

 tal characters, and the dentition. He agrees with the 

 author that Aletomeryx is related to the true Antilo T 

 capridse, although he does not commit himself as to its 

 direct ancestry with the existing prongbuck. There is, 

 however, no known detail of structure which would debar 

 the fossil from the ancestral line. 



