304 



University of California Publications. 



[Geology 



a fragment of a large horn-core from the Thousand Creek Beds 

 to Neotragocerus of Matthew and Cook. This specimen consists 

 of only a fragment representing the tip of a horn. In some 

 respects it is quite similar to the tip of a Tragoceras horn. It 

 may, however, represent the terminal portion of a large Ilingo- 

 ceros horn on which the spiral has faded out before reaching the 

 superior end. The surface structure is apparently less trago- 

 cerine than antilocaprine, though it is not easy to judge of this 

 character in the terminal portion of the horn. 



Transmitted February 15, 1911. 



