LIST OF CONTRIBUTORS. 



With reference to the several articles contributed by each. 



For Verbal Communications see General Index. 



Allen, Harrison, M. D. A biographical sketch of John Adams 



Ryder 222 



Note on a uniform plan of describing the human skull . . 170 



Brown, Amos P. The crystallization of Molybdenite 210 



Cockerell, T. D. A. The Bees of the Genus Perdita F. Smith . 25 

 Cook, O. F. Summary of the new Liberian Polydesmoidea . . 257 



Cope, Edward D. The Mesenteries of the Sauria 308 



New and little-known Mammalia from the Port Kennedy 



Bone Deposit 378 



On the Hemipenes of the Sauria 461 



Dall, WilHam Healey. Insular landshell faunas, especially as 

 illustrated by the data obtained by Dr. G. Baur in the 



Galapagos Islands (Plates XV, XVI, XVII) 395 



Dolley, Charles S., M. D. The Planktonokrit, a centrifugal ap- 

 paratvis for the volumetric estimation of the food-supply 



of oysters and other aquatic animals 276 



Fox, William J. Contributions to a knowledge of the Hymen- 



optera of Brazil. No. 1, Scoliidae 292 



The Hymenoptera collected by A. Donaldson Smith in 



Northeastern Africa 547 



Harris, Gilbert D. New and interesting Eocene Mollusca from 

 the Gulf States (Plates XVIII, XIX, XX, XXI, XXII, 



XXIII) 470 



Henry, Fredk. P., M. D. Remarks on Filaria 271 



Keller, Ida A. The coloring matter of the Aril of Celastrus 



scandens 212 



Pilsbry, Henry A. New species of the Helicoid Genus Polygyra 



(Plates II and III) 15 



Description of new species of Mollusks 21 



A remarkable Central American Melanian 269 



/ f 3 3 



