New species of fresh water Mollusks from South America 



(Plates XXVI and XXVII) 561 



Geology of the mussel-bearing clays of Fish-house, New 



Jersey 567 



Pilsbry, Henry A. and Samuel N. Ehoads. Contributions to the 



Zoology of Tennessee. No. 4, Mollusks 487 



Pilsbry, Henry A. and E. G. Vanatta. Catalogue of the species 



of Cerion, with descriptions of new forms (Plate XI) . . 315 

 Revision of the North American Slugs : Ariolimax and 



Aphallarion (Plates XII, XIII, XIV) 350 



Rhoads, Samuel N. Contributions to the Zoology of Tennessee. 



No. 3, Mammals 175 



Synopsis of the Polar Hares of North America (Plates VI, 



VII, VIII, IX, X) 351 



Mammals collected by Dr. A. Donaldson Smith during his 

 expedition to Lake Rudolf, Africa (Plate XXV) '. . . . 517 

 Shufeldt, R. W., M. D. Fossil birds and Mammals from Grotto 



Pietro Tamponi and Grive-St. Alban (Plate XXIV) . . 507 

 Stone, Witmer. The molting of birds, with special reference to 

 the plumage of the smaller land birds of Eastern North 

 America (Plates IV and V) 108 



