IV CONTENTS 



PAGE. 



No. 5. APRIL, 1904 



HARRY BEAL TORREY : On the Habits and Reactions of Sagartia 



davisi 203 



FRANK E. LUTZ : Variation in Bees 217 



ALBERT M. REESE: The Sexual Elements of the Giant Salamander, 



Crypto 1) ranch us allegheniensis 220 v 



E. G. SPAULDING : The Rhythm of Immunity and Susceptibility of 

 Fertilized Sea-urchin Eggs to Ether, to HCl, and to Some 

 Salts 224 



GEORGE T. HARGITT : Budding Tentacles of Gonionemus 241 



No. 6. MAY, 1904 



WILLIAM MORTON WHEELER: A Crustacean-eating Ant (Lepto- 



genys elongata) Buckley 251 



WM. S. MARSHALL: The Marching of the Larva of the Maia 



Moth, Hemileiica maia 260 



C. M. CHILD: Form- Regulation in Cerianthiis, IV. 7 he Role 



of Water-Pressure in Regeneration 266 



HELEN DEAN KING : Notes on Regeneration in Tubularia crocea.. 287 



Research Seminar of the Marine Biological 



Laboratory for the Year ipoj 307 



