626 



INDEX 



Asteroidea compared to covering-plates 

 of Crinoidea, 589 ; spine, of Asterias 

 rubens, 434 



Adamsia, 377; A. palliata, 378, 381; 

 .4. rondeletii, 378 



Adaptation to fresh water, 176 f. 



Adelea ovata, syngamy of, 101 



Adelocodonic, 265 



Adhesion of species, 174 n. 



Adinidae, 130 n. 



Adoral, band of cilia in Dipleurula larva, 

 605 ; membranellae, 145 ; trichocysts, 

 145 ; wreath, 137 f. ; wreath of Vorti- 

 cella, 156, 157 



Aegina, 296 



Aeginidae, 296 



Aeginopsis, 296 



Aeolis, nematocysts of, 248 



Aequorea, 278 



Aequoreidae, 278 



Aerotaxy, 23 



Aethalium septicum ( = Fuligo varians), 

 92 f. 



Afferent canal of contractile vacuole, of 

 Stylonychia, 139, 140 ; of Stentor, 156 



Africa, Tropical, antimalarial measures in, 

 106 ; Trypanosomic diseases of, 120 f. 



Agalma, 300, 307 



Agalminae, 307 



Agaricia, Jfi3 



Agaricoides, 350 



Agassiz, 258, 312, 319; on classification 

 of Endocyclica, 533 ; of Clypeastroidea, 



' 548 



Aggregate, formation, in Microgromia, 59 ; 

 social, of Vorticella, 158 ; (rosette) of 

 Treponema, 120 



Aggregation of plasmodia into aethalium, 

 92 f. 



Agitation, stimulus of, 19 f. 



Aglaophenia, 276, 279 



Aglaophenopsis (Plumulariidae, 279), 277 



Aglaura, 294 



Aglauridae, 294 



Aiptasia couchii, 382 



Air, presence of Flagellate spores in dust 

 of, 118 



Air-borne germs in relation to putrefaction, 

 - etc., 43 



Alate, 185 



Alcock, 268 



Alcyonacea, 346 f. 



Alcyonaria, 329 f., 340 ; colour, 337 ; di- 

 morphism, 333 ; food, 339 ; mesenteric 

 filaments, 333 ; nematocysts, 247 ; phos- 

 phorescence, 338 ; reproduction, 340 ; 

 skeleton, 334 ; spicules, 334 ; zooids, 330 



Alcyoniidae, 349 



Alcyonmm, 330 f., 332, 349 ; nematocyst 

 of ; 247; A. digitatum, 332, 338 f., 347, 

 349 ; larva, 341 ; A. glomeratum, 349 ; 

 A. palmatum, 340 ; A. purpureum, 338 



Aleurone, 37 



Algae, related to holophytic colonial 

 Flagellata, 109, 130 



Algeria, dourine disease in, 119 



Alicia mirabilis, 382 



Aliciidae, 382 



Alimentary canal, of Asterias rubens, 438 ; 

 of Ophiothrix fragilis, 485 ; of Echinus 

 esculentus, 516 ; of Echinarachnius 

 parma, 546 f. ; of Echinocardium cor- 

 datum, 551 ; of Antedon rosacea, 583 ; 

 of Hyocrinus, 589 ; of Actinometra, 589 ; 

 development of, in Eleutherozoa, 604, 

 605; in Antedon rosacea, 618, 619 



Allen, on food, of Echinus escidentus in 

 Plymouth Sound, 516 



Allman, 246, 265, 267, 273, 274; on 

 Cystoflagellates, 135 



Allogromia, 59 f., 65 



Allogromidiaceae, 58 ; habitat of, 48, 59 



Allopora, 287 ; A. nobilis, 287 



Alpheus, 351 



Alternating modes of brood -formation in 

 Sporozoa, 48 



Alveolar, structure (fine) of cytoplasm, 6 ; 

 system (coarse) in relation to skeleton of 

 Radiolaria, Dreyer's scheme of, 84 



Alveolate ectoplasm, of pelagic Foramini- 

 fera, 61 ; of Heliozoa, 71 f. ; of Actino- 

 sphaerium, 72 f. ; of Radiolaria, 79 ; 

 pedicellaria of Leptogonaster, 456 



Alveole ( = minute cavity in cytoplasm), 5 f. ; 

 in Ciliata. 142 ; in Stylonychia, 140 ; 

 (= large vacuole of Radiolaria, etc.), 76, 

 79, 84 



Alveolina, 59 



Alveolus, of Echinus esculentus, 526 



Alveopora, 397 



Amalthea (Fam. Corymorphidae, 273), 266 



Ambulacral area, of Echinarachnius parma, 

 544 ; of Echinocardium cordatum, 550 



Ambulacral groove, of Asteroidea, 432 ; 

 representative in Ophiuroidea, 481 ; 

 representative in Echinoidea, 515 ; of 

 Pelmatozoa, 579; of Antedon rosacea, 

 581, 582, 587 ; of fossil Crinoidea, 595 ; 

 of Thecoidea, 596 ; of Carpoidea, 596 ; 

 of young Ophiuroid, 613 



Ambulacral ossicle, of Asteroidea, 432 ; of 

 Asterias rubens, 434 ; of Ophiothrix 

 fragilis, 481 ; compared to auricula of 

 Echinus esculentus, 526 ; to inner plates 

 of Palaeodiscus, 557 ; to side-plates of 

 Crinoidea, 589 



Ambulacral plate, of Echinus escidentus, 

 511 ; of Cidaridae, 533 ; of Sphaer- 

 echinus, 539; of Strongylocentrotus, 539; 

 of Echinarachnius parma, 544 



Amines, 15 



Ammodiscus, 59 



Amnion, 613 



Amniotic cavity, 613 



