CONTENTS. xm 



PAGE 



Excretory Organs of Ilirudinea Part 5 657 



Nervous System of Solenophonts „ 658 



Development of Planaria polychroa „ 658 



Development of Annelids Part 6 837 



Fleurochceta Moseleyi n 839 



Anatomy and Histology of Lumbriculus variegatus .. ., „ 8i0 



Anatomy of the Hirudinea » 841 



Spadella marioni .. ., » "43 



New Nematoid » 84:3 



Male of Oxyuris curvula d 843 



Female Organs of Ascaris megalocephala . . .... . . „ 844 



New Worm with Remarkable Nervous System „ 845 



Anatomy of Cestoda « 846 



Development of the Ovum of Philodina roseola „ 847 



New Swiss Rotatoria » 847 



Eclimo dermata . 



' Challenger ' Eolothuroidea Part 1 70 



Supposed Coral-eating EaUts of Holothurians Part 2 215 



Stalked Crinoids 216 



New Deep-Sea Stalked Crinoid „ 216 



Asterid from Great Depths ■.. 216 



Psolus and its Allies Part 3 374 



Perivisceral Fluid of the Sea-Urchin ■ .. .. „ 374 



Eudiocrinus 



375 



Arctic and Antarctic Crinoids » 375 



Classification of the Comatulce „ 375 



Spicules of Cucumaria hyndmanni, C. calcigera, and two 



Allied Forms. {Plate VIII.') Part 4 481 



Democrinus parfaiti d 512 



Physiology of Echinodermata Part 5 659 



Organization of Echinoderms ,> 661 



^ Challenger' Ophiuroids » 661 



New Ophiuroids » "62 



New Crinoid from the Southern Sea „ 662 



Histology of Echinodermata Part 6 847 



Acanthology of Desmostichous Echinids „ 849 



Ophiurids of the'' Gazelle' j5 850 



Ccelenterata. 



Nematophores of the Hydroida Parti 70 



Green-cells of Hydra jj 71 



Development of the Ovum of Podocoryne carnea „ 72 



<■ Challenger' Deep-Sea MeduscB » 72 



« Challenger ' Corals ? 73 



Morphology of the Coral-Skeleton » 73 



Cyclical Development and Relationships of the Siphonophora Part 2 217 



Ccelenterata of the Southern Seas „ 217 



Observations on Hydrce » 219 



Development of Renilla » 220 



Scotch PennatuUda ;> 221 



Origin of the Spermatozoa in Medusa: Par* 3 376 



