CONTENTS. XIX 



PAG» 



EiDEWOOD, W. G. — Plumes of Cephalodiscux 429 



„ New Species of Cephalodiscus 429 



Oka, A. — New Species of Pectinatella from Japan 430 



Annandale, N. — Fresh-water Polyzoa of India 430 



Weltner, W. — Pectinatella mag aificu Leidy ill Berlin 430 



SiLBERMANN, S. — Minutc Structure of Alct/oiiidium mytiU 430 



Keumbach, T. — Trichoplax, a Planula 430 



Smith, Edgar A. — Antarctic Brachiopods 557 



RiDEWOOD, W. G. — New Cephalodiscm 557 



SoHEPOTiEPF, A. — Researches on the PterohrancliisR 681 



Rotifera. 



PuNNETT, R. 0. — Sex-determination in Hydatina 171 



RoDSSELET, C. F. — Tetramastix opolieiisis 172 



Beauchamp, p. de — Morphology and Varintiona in the Wheel-organ of Rotifera .. 172 

 „ „ Intestinal Absorption and Formation of Reserve Material in 



Rotifera 308 



Murray, James — Rotifera of the Scottish Lochs 308 



„ „ South American Rotifers 308 



Beauchamp, P. de — Digestion and Excretion of Chlorophyll in Rotifera 558 



„ „ Natommata (Copeus) cerberus Gosse 558 



Echinoderma. 



Fisher, W. K. — New Californian Starfishes 48 



Perez, Ch. — Commensals of Echinoderms 48 



Ostergen, Hjalmar — Species of Pseudocucumis and Phyllophorus 48 



WooDLAifD, W. — Spicule- formation in Echinoderms 308 



MoIntosh, D. C. — Meristic Variation in Common Sun-star 309 



Agassiz, A. & H. L. Clark — Hawaiian Echinoids 309 



LuDWiG, H. — New Deep-sea Starfishes 430 



KoEHLER, R. — Sexual Dimorphism in Ophiacantlia vivipara 431 



Meurer, W. — Eyes of Deep-sea Starfish ..' 431 



Vles, Fred — Classification of Echinoids 431 



Edwards, C. L. — Development of Ambulacral Appendages in Holothuria floridana 559 



Clark, H. L. — Genus Heliaster 559 



GtKDD^Gc.— Hermaphroditism in Strongylocentrotus 559 



Woodland, W. — Spicules of Synapta and Auricular ia 681 



Edwards, C. Lincoln — North Pacific Holothurians 682 



Chadwiok. H. C. — Memoir on Antedon 682 



Woodland, W. — Studies in Spicule-formation 682 



Ccelentera. 



Thomson, J. Arthur, & W. D. Henderson — Alcyonarians from Zanzibar .. .. 48 

 )) „ „ Deep-Sea Alcyonarians from Indian 



Ocean 49 



Carruthers, R. G. — Primary Septal Plan of the Rugosa 49 



Hammatt, M. L. — Fragmental Fission in Metridium marginatum 49 



Stschelkanowzew, J. — Development of Cunina proboscidea 50 



Annand ALE, Nelson — Hydra or ientalis 50 



>, „ Bionomical Relations of Hydra orientalis 50 



S.ERTWiG,B,iOKAnv)— Budding and Sexual Reproduction in Hydra fusca .. .. 50 



Mater, A. G. — Medusx of the Hawaiian Islands 173 



TOTTS, Edward— Fresh-water Medusx 173 



Steche, O. — Pelagic Hydroid Colonies 173 



Benham, W. B. — New Species of Sarcophyllum from New Zealand 173 



Martin, Jose Rio J A Y— Ccelentera from the Spanish Coast 174 



Bohn, G. — Responses of Actinia 309 



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