670 



INDEX 



Vexillum, 421 



Vibratile styles of Rotifers, 141 



Villogorgia, 356 



Virgularia, 339, 362 ; V. juncea, 360 ; V. 



mirabilis, 362 ; V. rumphii, 330, 360 

 Virgulariidae, 362 

 Vision, of Asteroidea, 446 ; of Echinoidea, 



522 

 Vital forces, 12 f. ; processes, 11 f. 

 Vitreous Foraminifera, 58, 62 

 Voluntary muscles of Mammals infested by 



Sarcosporidiaceae, 108 

 Volvocaceae, 110, 111, 125 f. ; literature 



of, 119 

 Volvocidae, 111, 126 f., 127, 129 ; theca, 



113 

 Volvox, plasmic cell connexions of, 37 n. ; 



a true vegetable Protist, 130 ; V. globator, 



127 f. 

 Vorticella, 138, 155 f., 157 ; V. sertulariae, 



symbiotic Zooxanthella in, 125 

 Vorticellidae, 157 f.; fission, 158; colonies, 



158 

 Vosmaer, 187 n., 212, 234 n., 237 



Wager, on Euglenaceae, 125 



Wagner, 256 n. 



Wallich, on Protozoa, 45 



Walteria, 199, 202 ; W. fiemmingi, 206 ; 

 W. leuckarti, 206 



Wasielewski, on Sporozoa, 94 n. 



Water in protoplasm, 12 



Water-Fleas, Vorticellidae found on, 158 ; 

 rheotaxy of (small Crustacea). 21 



Water-vascular system, 428 ; of Asterias 

 riibms, 441 ; of Asteroidea, 457 ; of 

 Ophiothrix fragilis, 486 ; of Echinus 

 esculentus, 516 ; of Echinarachnius 

 parma, 546 ; of Echinocardmm cordct- 

 tum, 551 ; of Holothuria nigra, 564 ; of 

 Holotlmroidea, 568 ; of Synaptida, 568 

 of Molpadiida, 568 ; of Elasipoda, 568 

 of Psolus, 569 ; of Antedon rosacea, 583 

 of Carpoidea, 597 



Weltner, 177, 178 



White Ants, hosts of Trichonymphidae, 123 



White Man's Grave, 106 



Wille, on Volvocaceae, 119 



Willey, 194 n., 248, 421, 422 



Williams, on density of living protoplasm, 

 13 11. 



Williamson, on structure of Foraminifera, 6 2 



Wilson, on protoplasm, 3 11. ; on syngamy, 

 34 n. 



Wilson, on Sponges, 171, 231 



Woltereck, 302 



Wolters, on reproduction of Monocystis, 

 96 n. 



Woodcock, on association and conjugation 

 in Gregarines, 99 n. ; on Haemoflagellates 

 ( =Trypanosomidae), 119 n. 



Worms, Earth-, hosts of Monocystis, 95 



Wreath, adoral, peristomial, of cilia or 

 membranellae of Ciliata Trichostomata, 

 137 f. ; of Stylonychia mytilus, 139 f. ; 

 of Metopus, 154 ; of Caenomorpha 

 uniserialis, 155 ; of Vorticella, 156, 

 157 ; posterior, of Vorticella, 156, 157 



Wrightella, 351 



Wrisburg, on organisms of putrefaction, 43 



Wiirmchen, of Gaule, a name for Lankester- 

 ella, 102 



Xenaster, J^76 



Xenia, 331, 335, 346, 348 



Xeniidae, 348 



Xenospongia patelUformis, 216 



Xiphacantha, 78, 78 



Xiphigorgia, 357 



Yaws, 121 n. 



Yellow-cells ( = Zooxanthella), 80, 86, 125, 



261, 373, 396 

 Yolk-granules of ovum of Sea-urchin, 7 

 Young state of one pairing - nucleus 



essential, 34 

 Yvesia, 224 



Zambezian Tick, infects man with Trepo- 

 nema, 121 n. 



Zaphrentidae, 406 



Zaphrentis, 407 



Zederbauer, on syngamy in Dinoflagellates, 

 131 n. 



Zittel, 241 n. 



Zoantharia, 329, 365 f. ; age, 375 ; food, 

 373; form, 366; gonads, 369; mesen- 

 teries, 366 f., 368 ; mesenteric filaments, 

 369 ; reproduction, 371 ; skeleton, 370 ; 

 stomodaeum, 369 ; tentacles, 366 



Zoanthidae, 44 



Zoanthidea, 370, 4O4 f. 



Zoanthus, 405 ; Z. macgillivrayi, 406 ; Z. 

 sulcatus, 406 



Zonarial Radiolaria, 75 



Zoochlorella, 111; a Chlamydomonad, 126 ; 

 symbiotic, in Heliozoa, 73 ; in Para- 

 mecium bnrsaria, 153 ; in Stentor poly- 

 morphus, 154 ; in Ophrydium, 158 ; in 

 Ephydatia, 175 ; in Hydra viridis ( = 

 chlorophyll corpuscles), 256 



Zooids of Volvox globator, 127 



Zoosporeae, 89 



Zoospores, of Algae and Fungi, possess 

 contractile vacuole, 15 ; of Lower Plants, 

 17 f. ; of Sarcodina, 49 ; of Tricho- 

 sphaerium, 54 ; of Microgromia socialis, 

 60 ; of Foraminifera, 67 f. ; of Clathru- 

 lina, 73 ; of Radiolaria, 85 f. ; of 

 Zooxanthella, 86 ; of Acrasieae, 90 ; of 

 Didymium, 92 ; of Paramoeba eilhardii, 

 116 n. 



Zoothamnium, 138, 158 



Zooxanthella, 110; a Chrysomonad, 125; in 



