XU CONTENTS. 



PAGE 



BiJTSCHLi, O. — Symmetry of Gasteropoda .. .. - Part 6 953 



Trambusti, A. — Innervation of Jleart in Helix „ 954 



Zachaeias, 0. — Nuclear Fusion in Cleavage Spheres „ 954 



Deost, K. — Nervous System and Sensory Epithelium of Cardium . . .. „ 954 



MoUuscoida. 

 a. Tunicata. 



Lacaze-Duthiers, H. de, & Y. Delage — Cynthiidse of the Coasts of 



France Part 1 53 



Lahille, F. — Alternation in the Heart of Tunicates Part 3 416 



Seeliger, 0. — Budding of S (Ipse „ 416 



RoULE, L. — Individual Variations in the Structure of Simple Ascidians .. „ 418 



„ „ The Phallusiadse of Provence , 418 



Herdman, W. a. — Phylogeny of the Tunicata Part 4 587 



Lahille, F. — Classification of the Tunicata .. .. Part 5 777 



KouLE, L. — Histology of Digestive Tract of simple Ascidians „ 778 



Lahille, F. — New Biplosoma „ 778 



Maurice, 0. — Structure of Amarcecium torquatum Part 6 955 



Lahille, F. — PolycUnas „ 956 



KoxJLE, L. — Simple Ascidians „ 957 



y3. Polyzoa. 



Pennington's (A. S.) ' -Sn'fisA ^oopAyies ' Parti 49 



OsTROOUMOFP, A. A.- — Morphology of Polyzoa „ 54 



MacGilliveat, p. H. — New or little known Polyzoa „ 54 



Kafka, J. — Fresh-water Polyzoa of Bohemia Part 2 228 



JuLLiEN, J, — Monograph of Fresh-water Polyzoa „ 229 



JoLiET, L. — Researches on Blastogenesis Part 4 587 



OsTROOUMOFF, A. — Development of Cyclostomatous Marine Bryozoa .. „ 588 



ViGELius, W. J. — Development of Polyzoa Part 6 959 



OsTROOUMOFF, A. — Metamorpjhosis of Fresh-ivater Polyzoa .. .. .. „ 960 



y, Brachiopoda. 



Davidson, T. — Pecent Brachiopoda Parti 54 



„ , , New Bhynchonella from Japan Part 2 229 



JouBiN, L. — Anatomy of Brachiopoda Inarticulata Part 5 778 



„ „ Anatomy of Discina „ 779 



Beyer, H. G. — Structure of Lingula pyramidata ,, 780 



Arthropoda. 



Lankester, E. Ray. — Clauses Classification of the Arthropoda .. .. Part 3 419 



OuDEMANS, A. C. — Affinities, Origin, and Classification of Arthropoda . . Part 4 589 



Bruce, A. T. — Embryology of Insects and Arachnids „ 590 



Glaus, C. — On the Classification of the Arthropoda Part 5 782 



Stuhlmann, F. — Maturation of the Arthropod Ovum Part 6 961 



Gabbi, U. — Terminations of Motor Nerves in Arthropod Muscle .. .. „ 961 



Leydig, F. — Dermal Sensory Organs of Arthropoda „ 962 



Cabriere, J. — Development of various kinds of Ocelli „ 963 



