90 0. C. Marsh — Cretaceous Mammalia. 



The bones represented on Plate V are from the same locali- 

 ties as some of the teeth described, but their closer association 

 with them must for the present be regarded as provisional. 

 Future disco\eries will doubtless show what relations they 

 all have to each other. 



The specimens here briefly described are from several 

 localities, which may belong to distinct horizons of the Laramie 

 formation, but are certainly within the limits of its typical 

 deposits They were all found by Mr. J. B. Hatcher, who has 

 done so much to bring to light the fossil vertebrate treasures 

 of this country. 



New Haven, Conn., June 24th, 1889. 



