CONTENTS. 



For Announcements, Reports, etc., see General Index. 



PAGE 



Alexandek, Charles P. New or little-known crane-flies 

 from the United States and Canada : Tipulidse, Diptera. 



Part 2 (Plates XVI-XXI) 458 



Barbour, T., and G. K. Noble. Notes on the water snake, 



Natrix compressicauda 29 



Churchill, William. The earliest Samoan prints 199 



Dall, William H. Notes on the Semelidae of the west coast 



of America, including some new species 25 



FiELDE, Adele M. On certain vesicles found in the integu- 

 ment of ants 36 



Concerning the sense of smell in dogs 42 



A new hypothesis concerning butterflies 93 



Fowler, Henry W. Notes on nematognathus fishes 203 



Cold-blooded vertebrates from Florida, the West Indies, 



Costa Rica, and eastern Brazil 244 



Fishes from Eastern Canada 515 



The fishes of Trinidad, Grenada, and St. Lucia, British 



West Indies 520 



Harshberger, John W. The diversity of ecologic conditions 



and its influence on the richness of the flora 419 



Matsumoto, H. a new classification of the Ophiuroidea. 



With descriptions of new genera and species 43 



Meunier, Stanislas. Observations sur la theorie generale 



des phenomenes glaciaires et sur les galets stries 2 



Theorie du gneiss et des terrains cristallophylliens en 



general 351 



Morse, Albert P., and Morgan Hebard. Fixation of 

 single type (Lectotypic) specimens of species of Ameri- 

 can Orthoptera. Division III 96 



Pilsbry, Henry A. Mollusca of the Southwestern States. 

 VI: The Hacheta Grande, Florida, and PelonciUo 

 Mountains, New Mexico (Plates V. VI, VII) 323 



