INDEX 



665 



Stalk or stem, of Glathrulina, 74 ; of 

 Flagellates, 112 f. ; of Anthophysa, 

 112 ; of Diplomita, 112 ; of Choano- 

 flagellates, 121, 122 ; of Monosiga, 

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

 chaceae, 141 n. ; of Schizotricha socialis, 

 152 ; of Vorticella, 157 ; of Carchesium, 

 158 ; of Epistylis, 158 ; of Zootham- 

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

 of Pelmatozoa, 430, 579 ; of Crinoidea, 

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

 toidea, 580, 597 ; of Blastoidea, 580, 

 599 ; of Anteclon rosacea, 581, 585 ; of 

 Actinometra, 588 ; of Rhizocrinidae, 588, 

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

 crinus, 588, 590 ; of Pentacrinidae, 588, 

 591, 592 ; of larva of Asterina gibbosa, 

 610 ; of Brachiolaria, 612 ; of larva of 

 Antedon rosacea, 619 ; of ancestral 

 Crinoidea, 600 ; of ancestral Echinoder- 

 mata, 621 



Starch, 15, 37 ; in Zooxanthella, 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 



Steganophthalmata, 314 



Steganopora, 284, 286 



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 ; 

 of Hyocrinus, 588, 590 ; of Rhizocrinidae, 

 588, 590 ; of larva of Anteclon rosacea, 

 619 



Stenoscyphidae, 321 



Stenoscyphus inabai, 321 



Stentor, 137, 154 ; regeneration, 35 ; 

 supposed nervous fibrils, 143 ; mega- 

 nucleus, 144 ; conjugation, 149 ; attach- 

 ment, 152 ; 8. coeruleus, 154 ; S. igneus, 

 154 ; S. polymorphous, young, and adult 

 in fission, 156 



Stentorin, bine, 154 n. 



Stephalia, 308 



Stephanophyes, 300, 307 ; S. superba, 

 307 



Stephanophyinae, 307 



Stephanophyllia, 404 



Stephanoscyphus, 318 ; S. mirdbilis, 206 



Stephanosphaera, 111, 128 



Stephoidea, 78 f. 



Stereoplasm, 394 



Stereosoma, 331, 334, 337, 344 



Stereotaxy, 20 



Sterilisation of colonial cells in Volvo.r, 

 129 



Sternata, 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 



Stichaster, 474 



Stichasteridae, 456, 474 



Stichodactylina, 380, 383 



Sticholonche, 86 ; host of Amoebophrya, 

 161 



Stichopathes, 407, 408 



Stichopus, 570 



Stichotricha, 138 



Sticklebacks, prey on Anopheles, 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 Aster las rubens, 438 ; of 

 Echinus esculentus. 516 ; of Holothuria 

 nigra, 562 ; of Antedon rosacea, 583 ; 

 of Dipleurula, 605 ; absent in Hyocrinus, 

 589 



Stomatoca (Tiaridae, 273), 415 



Stomatograptus, 282 



Stomodaeum, of Anthozoa, 327 ; of Cteno- 

 phora, 415 ; of Echinus esculentus, 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 



Streptocauhis, 277 



Streptophiurae, 491, 494, 500, 502 



Strobila, 317 



Stromacystis, 596 



Stromatopora, 283 



Stromatoporidae, 283 



Strombidium (Torquatella), 137, 155 n. 



Strongvle, 183, 224 



Strongylocentrotus, 512, 522, 533. 



S. drotbac/n'ensi's, 512, 523. oil ; 8. 

 liridus, 541 ; S. jmrpm-atus, 542 



Stryplmus ponderosus, 222 



Btuder, 340 



