CONTENTS. 



Editorial Notes i 



I. A New Genus and Some New Species and Sub- 

 species of Abyssinian Rodents. By Childs 

 Frick ........ 7 



II. A New Titanothere from the Uinta Eocene. By 



O. A. Peterson . . . . . . 29 



III. A Small Titanothere from the Lower Uinta Beds. 



By O. A. Peterson . . . • • 53 



IV. On the Osteology of the Genera Lasiopyga and 



Callithrix with Notes upon the Osteology of 

 the Genera Seniocebus and Actus. By R. 

 W. Shufelot . . . . . .58 



V. A New Rhynchocephalian from the Jura of So- 



lenhofen. By Norman MacDowell Grier . 86 

 VI. The Scales of the South American Characinid 



Fishes. By T. D. A. Cockerell . . 92 



VII. A Mounted Skeleton of Platigonus leptorhinus 



in the Carnegie Museum. By O. A. Petkrsox. i 14 

 VIII. Lichens Collected During the Summers of 19 12 

 and 1913 in the Thunder Bay District, On- 

 tario, Canada. By R. Heber Howe, Jr. . 118 

 IX. A Preliminary List of the Fossil Plants Oc- 

 curring in the Roof of the Pittsburgh Coal. 

 By Norman McDowell Grier . 125 

 X. Some Undescribed Remains of the Uinta Titan- 

 othere Dolichorhinus. By O. A. Peterson . 1 29 

 XI. Notes on Triassic Fishes Belonging to the Fam- 

 ilies Catopteridae and Semionotidae. Bv C. 

 R. Eastman . . . . . • i"39 



XII. The Osteology of Promerycochcerus. By O. A. 



Peterson . . . . . . -149 



XIII. Correction of a Generic Name. By O. A. Peter- 

 son ........ 220 



