Douglass : Dromomervx. 



477 



In a recent letter to me Dr. W. D. Matthew writes: "The referred 

 material from Oregon (Mascall) consists of upper jaws more or less 

 incomplete, teeth, and limb and foot bones. It is very close to B. 

 borealis although not identical specifically in my judgment." 



Professor Scott found Dromomeryx borealis and D. antilopinus in 

 the Deep River beds of Montana. Mr. Douglass found part of a skull 

 not distinguishable from Dromomeryx borealis and two or three other 

 species, referred to Palceomeryx americamis and Palceomeryx madi- 

 sofiius in the Miocene deposits of the Lower Madison Valley in Mon- 

 tana. He also found part of a skeleton of Dromomeryx antilopinus in 

 the typical locality of the Deep River beds. In 1899 he found large 

 portions of skeletons in the Flint Creek beds in Montana. Dr. 

 Matthew has listed ^' FalcBomeryx^' in the Pawnee Creek beds of 

 Colorado and the Santa Fe beds of New Mexico. 



I give below a table showing the deposits in which the species, re- 

 ferred in this paper to Dromomeryx, have been found with some of 

 the associated fossils which appear to be most characteristic. I think 

 there is little doubt that these beds are, comparatively speaking, 

 nearly related in time, though no two of the faunas may be exactly 

 contemporaneous. 



Mylaganhis 



Trilophodon 



Aphelops 



Merychippus 



Hypohippus 



Protohippus 



Pronontot/ierititn 



Protolabis 



Procamelus 



Blastomeryx 



Merycodus 



Drofiiomei-yx 



Dromomeryx borealis. 



iiS 



is 



t/2 u 



X 

 X 

 X 



X 



X 

 X 



I would for the present place these various deposits in the Upper 

 Miocene, though some may be found to belong to the uppermost 

 portion of the Middle Miocene of America. On account of the dif- 

 ferences existing in the faunas of the Miocene of Europe and America 



