Vlll BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



New bathymetrical map of the West Indies region [abstract] ; 

 by Chester A. Reeds 142 



Isolation as a factor in the development of Paleozoic faunas 

 [abstract] ; by Amadeus W. Grabau 143 



An Ordovician fauna from southeastern Alaska [abstract] ; 

 by Edwin Kirk 143 



Affinities and phylogeny of the extinct Camelidae [abstract] ; 

 by W. D. Matthew 144 



Rocliy Mountains section in the vicinity of Whitemans Pass 

 [abstract] ; by 0. W. Drysdale and L. D. Burling 145 



Further light on the earlier stratigraphy of the Canadian 

 Cordillera [abstract] ; by Lancaster D. Burling 145 



Evolution of vertebrae ; by S. W. Williston 146 



Diseases of the Mosasaurs [abstract] ; by Roy L. Moodie 147 



Report on a collection of Oligocene plant fossils from Mon- 

 tana [abstract] ; by O. E. Jennings 147 



New Tillodont skull from the Huerfano Basin, Colorado [ab- 

 stract] ; by Walter Granger 147 



Mollusca of the Carrizo Creek beds and their Caribbean affini- 

 ties [abstract] ; by Roy E. Dickerson 148 



Proposed correlation of the Pacific and Atlantic Eocene [ab- 

 stract] ; by Roy E. Dickerson 148 



Paleozoic glaciation in southeastern Alaska [abstract] ; by 

 Edwin Kirk 149 



Principles of classification of Cyclostome bryozoa [abstract] ; 

 by F. Canu and R. S. Bassler 151 



Fauna of the Meganos group ; by B. L. Clark 152 



Fossil mammals of the Tiffany beds [abstract] ; by W. D. 

 Matthew and Walter Granger 152 



Fauna of the Idaho Tulare Pliocene of the Pacific Coast 

 region ; by J. C. Merriam 152 



Revision of the Pseudotapirs of the North American Eocene 

 [abstract] ; by O. A. Peterson 152 



Notes on the American Pliocene rhinoceroses [abstract] ; by 

 W. D. Matthew 153 



New artiodactyls from the Upper Eocene of the Uinta Basin, 

 Utah [abstract] ; by O. A. Peterson 153 



Marine Oligocene of the west coast of North America [ab- 

 stract] ; by B. L. Clark and Ralph Arnold 153 



The question of paleoecology ; by F. E. Clements 154 



Note on the evolution of the femoral trochanters in reptiles 

 and mammals ; by William H. Gregory 154 



Carboniferous species of "Zaphrentis" ; by G. H. Chadwick. . 154 



Extinct vertebrate faunas from the Badlands of Bautista 

 Creek and San Timoteo Canyon of southern California ; by 

 Chelds Frick 154 



Notes on Eifel brachiopods ; by G. H. Chadwick 154 



Register of the Pittsburgh meeting, 1917 155 



