CONTENTS. 



Ryder, John A. Obituary Minute . . 211 



Baldwin, D. D. Description of new Species of Achatinellidse from the 



Hawaiian Islands. (Plates X and XI) 214 



Gwatkin, H. M., and Henry Suter. Observations on the Dentition of 



Achatinellidae 237 



Rhoads, Samuel, N. Notes on the Varying Hares of Washington and 



British Columbia, with Description of a new Sub-species 241 



Rhoads, Samuel N. Distribution of the American Bison in Pennsyl- 

 vania, with Remarks on a new Fossil Species 244 



Stone, Witmer. The Priority of the Names Calliste, Aglaia, and 



Calospiza and their use in Ornithology 251 



Morris, Charles. The Extinction of Species 253 



Fox, William J. Synopsis of the Stizini of Boreal America 264 



Scott, W. B. Protoptychus Hatcheri, a new Rodent from the Uinta 



Eocene 269 



Keller, Ida A. The Jelly-like Secretion of the Fruit of Peltandra 



undulata Raf. (Plate XII) 287 



Meehan, Thomas. Memoir of John Howard Redfleld 292 



Johnson, C. W., and D. W. Coquillett. Diptera of Florida 303 



Moore, J. Percy. Notes on American Enchytrseidse I. New Species of 



Fridericia from the Vicinity of Philadelphia. (Plate XIII) 341 



Pilsbry, Henry A. On the Status of the Names Aplysia and Tethys . 347 

 Fox, William J. Synopsis of the Bembicini of Boreal America. (Plate 



XIV) 351 



Rhoads, Samuel N. Contributions to the Zoology of Tennessee. No. 



1, Reptiles and Amphibians 376 



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