CONTENTS. 



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



Barringer, Daniel Moreau. Coon Mountain and its Crater, 861 

 BiLGRAM, Hugo. Diachaea cylindrica, a New Species of Myceto- 



zoa, 524 



Brown, Arthur Erwin. The Utility Principle in Relation to 



Specific Characters, 206 



The Identity of EutgeniaatrataKenn., 692 



Crawley, Howard. The Movements of Gregarines, ... 89 

 Coelosporidium blattellse, a New Sporozoan Parasite of 



Blattella germanica, 158 



Crosby, Cyrus R. A Catalogue of the Erigonese of North Amer- 

 ica, with Notes and Descriptions of New Species (Plates 



XXVIII, XXIX), 301 



Fowler, Henry W. New, Rare and Little Known Scombroids, 56 

 Notes on some Arctic Fishes, with Description of a New On- 



cocottus, 362 



Some Fishes from Borneo, 455 



The Sphagnum Frog of New Jersey — Rana virgatipes Cope 



(Plate XL), 662 



Harshberger, John W., M.D. Original Centres Concerned in 



North American Plant Dispersal, 2 



The Plant Formations of the Bermuda Islands, .... 695 

 The Hour-Glass Stems of the Bermuda Palmetto (Plate 



XLII), 701 



Jennings, H. S. Behavior of Sea Anemones, 754 



Johnson, Charles W. Annotated List of the Types of Inverte- 

 brate Fossils in the Collection of The Academy of Nat- 

 ural Sciences of Philadelphia, 4 



Montgomery, Thomas H. Jr. The Spermatogenesis of Syrbula 

 and Lycosa, with General Considerations upon Chromo- 

 some Reduction and the Heterochromosomes (Plates IX, 

 X), 162 



