CONTENTS. 



Transactions of the Society — page 



XII. — A Monograph op the Genus Lycoperdon (Touenef.) Fe. 



By G. Massee, F.E.M.S. (Plates XII. and XIII.) .. 701 



(Plate XI. is not yet ready.) 



SUMMARY OF CURRENT RESEARCHES. 



ZOOLOGY. 



A. VERTEBRATA :— Embryology, Histologry, and General, 

 o. Embryology. 



Geddes, P. — Theory of Sex and Beproduction 728 



Gepdes, p., & J. Arthur Thomson — History and Theory of Spermatogenesis .. . . 729 



Benda, C. — Spermatogenesis of MamToaKa .. 730 



Prince, E. E. — Significance of the Yolk in Osseous Fishes .. 730 



Sarasin, P. & F. — Development of Ichthyophis glutinosa .. 731 



Eyder, J. A. — Why do certain Fish-ova float '? 731 



FoKKER. — Fermentations by Protoplasm of a recently-hilled animal . . .^ . . . . 731 



LiEBEBMANN, L. — Erfkryo-chemicol Investigations 732 



B. INVERTEBRATA. 



Delage, Y. — Otocysts as Organs of Locomotor Orientation . . 732 



Zaoharias, O. — Pelagic and Littoral Fauna of North German LaJcea 733 



MoUusca. 



JoTJBiN, L. — Anatomy and Histology of Salivary Glands of Cephalopoda 734 



ViALLETON, L. — Development of the Squid 734 



Semper, 0. — Development of Reproductive Organs in Gasteropods 735 



Ratvitz, B. — Central Nervous System of Acephalous Mollusca .. « 736 



Eoger, E. — Jouannetia cumingii Sow. . . 737 



MoUuscoida. 



a. Tunieata. 



Chabry, L. — Normal and Teratological Embryology of Ascidians 739 



/3. Polyzoa. 



OsTBOTTMOFF, A. — Development of Cyclostomatous Marine Bryozoa 740 



KoROTNEPF, A. — Development of Alcyonella fungosa 741 



KiDLET, S. O. — Characters of the Genus Lophopus .. .. .. 742 



Arthropoda. 



Mark, E. L. — Simple Eyes in Arthropods , 742 



a. lusecta. 



Blochmann, F. — Directive Corpuscles in Eggs of Insects , .. ,. 743 



KowALEVSKY, A. — Post-embryonal Development of Muscidx 744 



Limbeck, R. V. — Histology of Insect Muscle 744 



WiTLAOZiL, E. — Halobates 745 



Beyerinck, M. W. — Cecidia caused by Nematus capress 746 



Maskell, W. M. — Honeydew of Cocddx 746 



