CONTENTS. 



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



page 



Banks, Nathan. Arachnida from Costa Rica (Plates V, VI) 194 



Barbour, Thomas. On the True Status of the Genus Caco- 



poides (Plates XVII, XVIII) 401 



Brown, Stewardson. Notes on the Flora of the Bermudas 486 



Crampton, G. C, Ph.D. A Contribution to the Comparative 

 Morphology of the Thoracic Sclerites of Insects (Plates 



I, II, III, IV) 3 



Fowler, Henry W. A new Species of Fish of the Genus 



Atopichthys, with Notes on New Jersey Fishes 406 



Harshberger, John W., Ph.D. Action of Chemical Solutions 

 on Bud Development : An Experimental Study of 



Acclimatization 57 



The Vegetation of the Salt Marshes and of the Salt and 



Fresh-water Ponds of Northern Coastal New Jersey 373 



Keele y, F. J. Microscopical Image Formation 177 



Lyman, Benjamin Smith. Scolithus linearis Burrows with 



Orifice Complete (Plate X) 296 



Montgomery, Thomas H., Jr., Ph.D. On the Spinnerets, 

 Cribellum, Colulus, Tracheae and Lung Books of Araneads 



(Plates XI, XII, XIII, XIV) 299 



Further Studies on the Activities of Araneads, II 548 



Moore, J. Percy, Ph.D. Polychaetous Annelids from Monterey 



Bay and San Diego, California (Plates VII, VIII, IX) 23^ 



The Polychaetous Annelids dredged by the U. S. S. "Alba- 

 tross" off the Coast of Southern California in 1904: I. 

 Syllidae, Sphaerodoridae, Hesjonidae and Plryllodocidae 



(Plates XV, XVI) 321 



Pilsbry, Henry A., Sc.D. A new Species of Scalpellum from 



British Columbia 367 



Unionidae of the Panuco River System, Mexico (Plates 



XXV, XXVI, XXVII) 532 



New Land Shells from Mexico 540 



