. THE GERMINAL SPOT IN ECHINODERM EGGS. 
By H. E. JORDAN. 
. THE SPERMATOGENESIS OF APLOPUS MAYERI. 
By H. E. JORDAN. 
. THE RELATION OF THE NUCLEOLUS TO THE CHROMOSOMES IN 
THE PRIMARY OOCYTE OF ASTERIAS FORBESII. 
By H. E. JORDAN. 
. THE PELAGIC TUNICATA OF THE GULF STREAM. 
By W. K. BROOKS. 
. THE ORIGIN OF THE LUNG OF AMPULLARIA. 
By W. K. BROOKS AND B. McGLONE. 
. THE ANNUAL BREEDING SWARM OF THE ATLANTIC PALOLO. 
By A. G. MAYER. 
. RHYTHMICAL PULSATION IN SCYPHOMEDUSAE. 
By A. G. MAYER. 
. NOTES ON MEDUSAE OF THE WESTERN ATLANTIC. 
By H.. F.. PERKINS. 
. HELMINTH FAUNA OF THE DRY TORTUGAS. 
By EDWIN LINTON. 
. A VARIETY OF ANISONEMA VITREA. 
By C. H. EDMONDSON. 
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