CONTENTS. xiii 

 Tunicata. 



PAGE 



Ritter, W. E. — New Type of Ascidian 47 



Bancroft, Frank W. — Estivation of Botrylloides gascoi 47 



Dam as, D. — Studies on Tunicates 177 



Bancroft, F. W., & C. O. Esterly — Physiological Polarisation in Ascidian Heart 177 



Jllin, Ch. — Archiascidia neapolitana 303 



Heinemann, Philipp — Mesoderm formation and the Structure of the Tail in Ascidian 



Larvue 303 



Fernandez, M. — Tunicate Blood System 430 



Rttter, W. E. — Pelagic Tunicates of the San Diego Begion 430 



Hopkinson, John — The British Tunicata .. .. 583 



Guthers, S. — Fertilisation in Solitary Ascidian* 688 



INVERTEBRATA. 



Mollusca. 



Boettger, O. — Scientific Value of Conchology 48 



Vigier, P., & Fr. Vles — Myocardium in Primitive Molluscs 303 



,. ., Histology of Molluscan Heart-Muscle 304 



<*■• Cephalopoda. 



Schweikart, A. — Egg-Envelopes in Cephalopods and Chitons 304 



Chun, C. — Notes on Anatomy of Cephalopoda 430 



Nopcsa, F. Baron— Symbiosis of Hydractinian with a Cephalopod 584 



Marceatj, F. — Muscles of the Mantle in Cephalopods 688 



Hoyle, W. E. — Ceylonese Cephalopods 688 



/3. Gastropoda. 



Lee, A. Bolles — Spermatozoon of Helix pomatia 48 



Casey, Thomas L. — Notes on the Pleurotomidse " .' .. 48 



Baker, F. C. — Spire Variation in Pyramidula alternata 49 



Bohn, G. — Tidal Sijnchronism of Littoral Animals 49 



Raj at, M. H. — Effect of Temperature on Growth in Physa taslei 49 



Fujita, T. — Germinal Layers in Gastropods 178 



Smallwood, W. M.— Maturation in Nudibranchs 178 



Strebel, H. — Magellan Species of Trophon .. 17^ 



Straub, W. — Physiological Studies on Aplysia 394 



Heath, H. — New Genus of Selanogastres 394 



Wilson, E. B.— Germinal Localisation in Patella and Dentalium .. .. .. .. 305 



Hanel, Elise — Cephalopyge trematoides 395 



Bonnevie, Kristine — Maturation in Enteroxenos ostergreni 431 



Heath, Harold — Nervous System and Subradular Organ in Solenogastres .. .. 431 



Bohn, G. — Tidal Periodicity in Littorina rudis 431 



Fleuke, H. J. — Anatomy and Phytogeny of Haliotis 431 



Abric, P. — Nematoblasts of Eolids 432 



Dimon, Abigail Camp- Study of the Mud Snail .' .. " " " 534 



Potzsch, O. — Development of Kidney and Heart in Planorbis.. .'. .[ .. .. 584 



Nierstrass, H. F.—Kruppomenia and the Radulse of Solenogastres.. .. .. .. 584 



Heath, Harold — Morphology of a Solenogaster 585 



Totzacee, R. J. — Kidneys and Gonads of Haliotis .. ., .. " 585 



Gorka, A. — Salivary Secretion of Snail " 535 



Smith, Burnett — Senility in Gastropods 68 ( ) 



Willcox, M. A.— Habits of Tortoise-Shell Limpet .. .. .. .'. .. " " 689 



Heath, H. — Breeding Habits of Chitons \' m 689 



Dall, W. H— Land and Fresh-water Shells of the Bahamas .. .. .. .. .. 690 



