iv Table of Contents. 



XIV. Rhinoceroses from the Oligocene and Miocene Deposits 



of North Dakota and Montana. By Earl Douglass. 256-266 

 XV. Fossil Horses from North Dakota and Montana. By 



Earl Douglass ••..... 267-277 

 XVI. Some Oligocene Lizards. By Earl Douglass . . 278-285 



XVII. Description of the Type Specimen of Stenomylus Gracilis 



Peterson. By O. A. Peterson .... 286-300 

 XVIII. Brief Descriptions of Some New Species of Birds from 

 Costa Rica and a Record of Some Species not Hith- 

 erto Reported from that Country. By M. A. Car- 

 nker, Jr. ...... 301-302 



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