626 



INDEX 



Asteroidea compared to covering-plates 

 of Crinoidea, 589 ; spine, of Asterias 

 rubens, 434 



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

 -4. rondeUtii, 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 ; trichooysts, 

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

 cella, 156, 157 



Aegina, ^96 



Aeginidae, 296 



Aeginopsis, ^96 



Aeolis, nematocysts of, 248 



Aequorea, %78 



Aequoreidae, %78 



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, 40S 



Agaricoides, 350 



Agassiz, 258, 312, 319 ; on classification 

 of Eudooyclica, 533 ; of Clypeastroidea, 



'" 548 



Aggregate, formation, in Microgromia, 59 ; 

 social, of Vorticella, 158 ; (rosette) of 

 Treponevia, 120 



Aggregation of plasmodia into aethalium, 

 92 f. 



Agitation, stimulus of, 19 f. 



Aglaop>henia, 276, 279 



Aglaophenopsis (Plumulariidae, S79), 277 



Aglmira, 294 



Aglauridae, S94 



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, 3^6 f- 



Aloyonaria, 3H9 f., 340 ; colour, 337 ; di- 

 morphism, 333 ; food, 339 ; mesenteric 

 lilameuts, 333 ; nematocysts, 247 ; phos- 

 phorescence, 338 ; reproduction, 340 ; 

 skeleton, 334 ; spicules, 334 ; zooids, 330 



Alcyoniidae, 349 



Alcyonium, 330 f., 332, 349 ; nematocyst 

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

 349 ; larva, 341 ; A. glnmeratum, 349 ; 

 A. 2}cilmntmn, 340 ; A. piurpuTeum, 338 



Aleurone, 37 



Algae, related to holophytic colonial 

 Flagellata, 109, 130 



Algeria, dourine disease in, 119 



Alicia mirdbilis, 382 



Aliciidae, 38S 



Alimentary canal, of Asterias ruhens, 438 ; 

 of Ophiothrixfragilis, 485 ; of Jilchinus 

 esculentus, 516 ; of Echinarachnius 

 piarma, 546 f. ; of Echinooardimn cor- 

 datum, 551 ; of Antedon rosacea, 583 ; 

 ot Hyoerimis, 589 ; of Actinometra, 589 ; 

 development of, in Eleutherozoa, 604, 

 605; in Antedon rosacea, 618, 619 



Allen, on food of Echinus esculentus in 

 Plymouth Sound, 516 



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

 Cystoflageliates, 135 



AUogromia, 69 f., 65 



AUogromidiaceae, 58 ; habitat of, 48, 59 



Allopora, 287 ; A. nobilis, 287 



Alpitieus, 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- 

 sphaeriui7i, 72 f. ; of Radiolaria, 79 ; 

 pedicellaria of Leptogonaster, 456 



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

 in Giliata, 142 ; in Stylonychia, 140 ; 

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

 79, 84 



Alveolina, 59 



Alveolus, of Echinus esculentus, 526 



Alveopora, 397 



Amalthea (Fam. Corymorphidae, $73), 266 



Ambulacral area, of EchinMrachniusparmaj 

 644 ; 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 ruiens, 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 esculentus, 

 511 ; of Cidaridae, 533 ; of Sphaer- 

 echinus, 539; of Strongylocentrotus, 539; 

 of Echinarachnius parnm, 544 



Amines, 15 



Ammodiscus, 59 



Amnion, 613 



Amniotic cavity, 613 



