XVlil CONTENTS. 



PAGE 



Blochmann, F., & C. Hilger — Gonactinia prolifera Part 4 593 



Haacke, W. — Nature of Pohjparium „ 594 



Haeckel, E. — System of Siphonophora Part 5 741 



Brooks, W. K. — Life-history of Epenthesis McCradyi, n. sp „ 743 



Vogt, C. — Arachnactis and Cerianthus „ 743 



Viguier, C, & H. de Lacaze-Duthiers — New Type of Anthozoa .. . . „ 745 



Milnes Marshall, A., & G. H. Fowler — ' Porcupine ' Pennatulida . . „ 745 



Korotneff, A. de — Development of Hydridx, Part 6 903 



Koch, G. v. — Flabellum „ 963 



Hickson, S. J. — Sexual Cells and Early Stages in Development of Millepora 



plicata „ 964 



Haddon, A. 0. — Larval Act inix parasitic on Hydromedusx „ 965 



Fischer, P. — Scyphistomata of Acraspedote Medusse „ 965 



Hertwig, K. — Supplementary Report on ' Challenger' Actiniaria .. .. „ 965 



Porifera. 



Sollas, W. J. — Sponges Parti 62 



Ebner, V. v. — Skeleton of calcareous Sponges „ 63 



Dendy, A. — New System of Chalininse „ 63 



Potts, E. — Fresh-water Sponges „ 63 



Fiedler, K. — Development of Generative Products in Spongilla „ 64 



Topsent, E. — So-called Peripheral Prolongations of Clionee, Part 2 239 



Thomson, J. Arthur — Structure of Suberites „ 239 



Dendy, A. — Comparative Anatomy of Sponges Part 4 594 



MacMunn, C. A. — Chromatology of Sponges „ 595 



Topsent, E. — Gemmules of Silicispongias „ 59G 



Noll, F. C. — Silicoblasts „ 596 



Weltner, M. — Survival of Spongillse after Development of S'l-arm-larvx .. „ 596 



Eidley, S. O., A. Dendy, & F. E. Schulze — ' Challenger ' Sponges .. . . „ 597 



Noll, F. C. — Natural History of Siliceous Sponges Part 5 745 



Schulze, F. E. — ' Challenger ' Hexactinellida „ 747 



Wierzejski, A. — Fresh-water Sponges „ 748 



Hi >^de, G. J. — New Species of Uritguctya „ 748 



Bell, F. J. — Note on the Large Size of the Spicules of Acis orientalis . . .. Part 6 921 



Nassonoff — Boring Clionids „ 965 



Fiedler K. — Formation of Ova and Spermatozoa in Spongilla flumatilis . . ,, 966 



Priest, B. W. — Remarkable Spicules from the Oamaru Deposit „ 967 



Protozoa. 



Gulliver, G. — Note on the Minute Structure of Pelomyxa palustris .. .. Part 1 11 



Maupas, E. — Conjugation of Paramecium „ 65 



Stokes, A. C. — New Fresh-water Infusoria , 65 



Neumayr, M. — Relationships of Foraminifera „ 66 



Schewiakoff, W. — Karyokinesis of Euglypha „ 66 



Kunstler, J. — Diplocystis Schneideri ,, 68 



Greenwood, M. — Digestion in Rhizopods Part 2 240 



Grassi, B. — Protozoa Parasitic in Man „ 240 



Zacharias, O. — Psorospermium Haeckcli „ 240 



Dawson, J. W. — Eozoon Canadense „ 241 



Burrows, H. W., C. D. Sherborn, & Eev. G. Bailey — The Foraminifera 



of the Red Chalk Part 3 383 



Mobics, K. — Direct Division of Nucleus in Euplotes harpa „ 436 



Anderson, H. H. — New Parasitic Infusoria „ 436 



Daday, E. Y. — Monograph of Tintinnodese „ 436 



