I. HABITS, REACTIONS, AND ASSOCIATIONS IN OCYPODA ARENARIA. 



By R. P. COWLES. 



II. HABITS, REACTIONS, AND MATING INSTINCTS OF THE WALKING- 



STICK, APLOPUS MAYERI. 



By CHARLES R. STOCKARD. 



III. STUDIES OF TISSUE GROWTH : I. AN EXPERIMENTAL STUDY OF 



THE RATE OF REGENERATION IN CASSIOPEA XAMACHANA. 



By CHARLES R. STOCKARD. 



IV. SOME INTERNAL FACTORS CONCERNED WITH THE REGENERA- 



TION OF THE CHEL^ OF THE GULF-WEED CRAB. 



By CHARLES ZELENY. 



V. A CONTRIBUTION TO THE LIFE-HISTORIES OF THE BOOBY AND 



MAN-O'-WAR BIRD. 



By F. M. CHAPMAN. 



VI. THE HABITSANDEARLY DEVELOPMENT OF LINERGESMERCURIUS. 



By E. G. CONKLIN. 



VII. TWO PECULIAR ACTINIAN LARV/E FROM TORTUGAS, FLORIDA. 



By E. G. CONKLIN. 



VIII. THE BEHAVIOR OF NODDY AND SOOTY TERNS. 



By J. B. WATSON. 



IX. AN EXPERIMENTAL FIELD-STUDY OF WARNING COLORATION IN 

 CORAL-REEF FISHES. 



By JACOB REIGHARD. 



