INDEX 



665 



Stalk or stem, of ClnthruUna, 74 ; of 

 Flagellates, 112 f. ; of Anthophysa, 

 112 ; of Diphmita, 112 ; of Clioano- 

 fiagellates, 121, 122 ; of Munosiga, 

 122 ; oi Polyoeca, 113, 122 ; of Peritri- 

 chaceae, 141 n. ; of Schizotrkha socialis, 

 152 ; of Vorticella, 157 ; of Carchesium, 

 158 ; of Epixtylis, 158 ; of Zvotham- 

 nium, 158 ; of Suctoria, 159, 160, 162 ; 

 of Peliuatozoa, 430, 579 ; of Criiioidea, 

 580 ; of Carpoidea, 580, 596 ; of Cys- 

 toiilea, 580, 597 ; of Blastoidea, 580, 

 599; of Anted 0)1 rosacea, 581, 585 ; of 

 Actinom'etra, 588 ; of Rhizocrinidae, 588, 

 590 ; of Holopus, 588, 592 ; of Hyo- 

 crinus, 588, 590 ; of Pentacrinidae, 588, 

 591, 592 ; of larva of Asterina gibhosa, 

 610 ; of Braclilolaria, 612 ; of larva of 

 Antedon rosacea, 619 ; of ancestral 

 Crinoidea, 600 ; of ancestral Ecliluoder- 

 niata, 621 



Starch, 15, 37 ; iu Zooxantliella, 86 ; in 

 Flagellata, 110, 115 



Starfish = Asteroidea, q.v. 



Stationary pairing-nucleus, 150 



Statocysts, 252, 288 



Statolith, 252, 289 



Statoplea, 279 



Statorhab in Geryonia, 252 



Stauractin, 234 



Stauromedusae, 310, 316, 320 



Stegauophthalmata, 314 



Steganopora, 284, :JSG 



Stein, von, on Protozoa, 45 f. ; misinterpre- 

 tation of parasitic Suctoria in Ciliata, 

 161 ; on Suctoria, 162 



Stelechotokea, 347 



Stelletta, 213, 214, 222 



Stem— see Stalk 



Stem-ossicles, of Pentacrinidae, 588, 591 ; 

 oi Hyocrinus, 588, 590 ; of Rhizocrinidae, 

 588, 590 ; of larva of Antedon rosacea, 

 619 



Stenoscyphidae, 321 



Stenoscyphus inabai, 321 



Stentor, 137, 154 ; regeneration, 35 ; 

 supposed nervous fibrils, 143 ; mega- 

 nucleus, 144 ; conjugation, 149 ; attach- 

 ment, 152 ; S. coertdeus, 154 ; S. igneus, 

 154; S. polymoiphus, young, and adult 

 in fission, 156 



Stentorin, blue, 154 n. 



Stepludia, SOS 



Stephanophyes, 300, 307 ; S. superba, 

 307 



Stephanophyinae, 307 



Stephanophyllia, 4O4 



Stephanoscyiihus, SIS ; S. mirabilis, 206 



Stephanosphaera, 111, 128 



Stephoidea, 7S f. 



Stereoplasni, 394 



Stereosoma, 331. 334. 337, 344 



Stereotaxy, 20 



Sterilisation of colonial cells in Volvox, 

 129 



Steruata, 554 



Sternum = Plastron, q.v. 



Sterraster (an aster with very numerous 

 actines soldered together by subsequently 

 deposited silica, which extends almost 

 to their extremities), 224 



Sterrula, 341 



Stewart's organs, of Cidaridae, 531 ; of 

 Echinothuriidae, 531 ; of Arbaciidae, 

 531, 539 ; of Diadematidae, 538 



St i chaste?; 4~4 



Stichasteridae, 456, 474 



Stichodactylina, 380, 383 



Sticholonche, 86 ; host of Anocbophrya, 

 161 



Stichopathes, 407, 408 



Stichopus, 570 



Stichotricha, 138 



Sticklebacks, prey on Anojjheles, 106 



Stimuli, 8 f. ; inducing responsive move- 

 ments, 19 f. 



Stoichactis kenti, 378, 383 



Stole, on Pelomyxa, 53 n. 



Stolon, 301 



Stolonifera, 342 



Stomach, present in Metazoa, 38 ; of gnats, 

 seat of syngamy of Acystosporidae. 103, 

 104 f. ; of Asterias rubens, 438 ; of 

 Echinux escul&iitus. 516 ; of Holotlniria 

 nigra, 562 ; of Antedon rosacea, 583 ; 

 of Dipleurula, 605 ; absent in Hyocrinus, 

 589 



Stomatoca (Tiaridae, 273), 415 



Stomatognqitus, 282 



Stomodaeum, of Anthozoa, 327 ; of Cteno- 

 phora, 415 ; of Echinus escnlentus, 516 ; 

 of Dipleurula, 605 ; of metamorphosing 

 Auricularia, 615; of larva of Antedon, 

 619 



Stomolophus, 325 



Stony Corals, 326 



Strain-figure of cell dividing by mitosis, 

 25, 26, 27 



Strained condition of cytoplasm during 

 syngamy, 34 



Streaming of granules in protoplasm, 17 



Streptocaulns, 277 



Streptophiurae, 491, 494, 500, 502 



Strobila. 317 



Sfromacystis, 596 



Stromatopora, 283 



Stromatoporidae, 283 



Strombidium (Torquatella), 137, 155 u. 



Strongj-le, 183, 224 



Strongylocentrotus, 512, 522, 533, 540 ; 

 S. droibachiensis, 512, 523, 541 ; S, 

 lividus, 541 ; S. purpnratus, 542 



Stryphnus ponderosns, 222 



Studer, 340 



