LIST OF CONTRIBUTORS. 



IVith refei'ence to the several articles contributed by each. 



For Verbal Communications see General Index. 



PAGE. 

 Allen, Harrison, M. D. On the distribution of color-marks in the Pteropo- 



dias 12 



Baker, Frank C. Remarks on Urosalpinx perrugatus Conr 46 



On the modification of the apex in Murex 66 



Bancroft, Edward. Co-ossification of Axis vertebra with the third Cervical.. 419 



Brown, Authur Erwin. On a new genus of Colubridse from Florida 199 



Ellis, J. B. and Benjamin M. Everhart. New North American Fungi 219 



Ford, John. Description of a new species of Helix 188 



Hartman, W. D.. M. D. Description of new species of shells. (Plate III.) 284 

 Heilprin, Angelo. Barometric observations among the high volcanoes of 

 Mexico, with a consideration of the culminating point of the North 



American continent 251 



The corals and coral-reefs of the Western Waters of the Gulf of Mexico. 



(Plates VI and VII.) 303 



The Eocene moliusca of the State of Texas. (Plate XI.) 393 



The geology and paleontology of the Cretaceous deposits of Mexico. 



(Plates XII, XIII, XIV.) 445 



Ives, J. E. On Arenicola cristata and its allies 73 



Echinoderms from the Northern Coast of Yucatan and the Harbor of 



Vera Cruz. (Plate VIII.) 317 



Jordan, David Starr. On the fishes described in Miiller's Supplemental Vol- 

 ume to the Systema Naturae of Linnaeus 48 



Keyes, Charles R. Synopsis of American Carbonic Calyptrrei das. (Plate II.) 150 



Leidy, Joseph, M. D. Notices of Entozoa 410 



Meehan, Thomas. Contributions to the life-histories of plants. No. V 266 



■Osborn, Henry Fairchild. A review of the Cernaysian Mammalia 51 



Pilsbry, Henry A. On the anatomy of Aerope cafifra Fer. (Plate I.) 41 



Note on a Southern Pupa 44 



New East Indian Land Shells 186 



New and little-known American Mollusks, No. 3. (Plate V.) 296 



Trochida;, new and old 343 



Description of a new Japanese Scalpcllum 441 



Rand, Theodore D. Notes on the genesis and horizon of the serpentines of 



Southeastern Pennsylvania 76 



Rex, Geo. A., M. D. Descriptions of three new species of Myxomycetes, 



/^ 3 2. 



