CONTENTS. 



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



Banks, Nathan. The Arachnicla of Florida (Plates VII, VIII), 120 

 Brown, Arthur Erwin. Post-glacial Nearctic Centers of Dis- 

 persal for Reptiles, 464 



Casteel, Dana Brackenridge, Ph.D. The Cell-Lineage and 



Early I^arval Development of Fiona marina, a Nudi- 



branchiate Molliisk (Plates XXI-XXXV), 325 



Chamberlin, Ralph V. New Chilopods 651 



Chapman, Henry C, M.D. Observations on Tupaia, with 



Reflections on the Origin of Primates (Plates IX, X), . 148 



Observations on Hyrax, 476 



Cockerell, T. D. a. The Roses of Pecos, New Mexico, . . . 108 



Fielde, Adele M. Three Odd Incidents in Ant-Life, .... 639 

 Fielde, Adele M., and George H. Parker. The Reactions of 



Ants to Material Vibrations, 642 



Fowler, Henry W. Notes on the Characinidse, 119 



New, Little Known and Typical Berycoid Fishes, .... 222 

 Description of a New Race of Notropis chalybseus from New 



Jersey (Plate XVII), 239 



Notes on Fishes from Arkansas, Indian Territory and 



Texas, 242 



New, Rare or Little Known Scombroids, No. 1 (Plate LI), . 757 

 GuLiCK, Addison. The Fossil Land Shells of Bermuda (Plate 



XXXVI), 406 



Harshberger, John W., Ph.D. The Comparative Age of the 



Different Floristic Elements of Eastern North America, 601 



Heath, Harold. The Larval Eye of Chitons, 257 



Keeley, F. J. A Spencer Objective, 475 



Keller, Ida. Summer Activity of ^ome Spring Flowers, . . 481 

 Monks, Sarah P. Variability and Autonomy of Phataria (Plate 



XLII), 596 



