626 



INDEX 



Asteroidea compared to covering-plates 

 of Crinoidea, 589 ; spine, of Asterias 

 rubens, 434 



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

 -4. rondeletii, 378 



Adaptation to fresh water, 176 f. 



Adeiea orata, syngamy of, 101 



Adelocodonic, 265 



Adhesion of species, 174 n. 



Adinidae, 130 n. 



Adoral, band of cilia in Dipleurula larva, 

 605 ; membrauellae, 145 ; trichocysts, 

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

 cella, 156, 157 



Aegina, 296 



Aegiuidae, 296 



Ae(/inoj)sis, 296 



Aeolis, nematocysts of, 248 



Aequorea, 278 



Aequoreidae, 278 



Aerotaxy, 23 



Aethalium septiciim ( = Fuligo varians), 

 92 f. 



Afferent canal of contractile vacuole, of 

 Sti/lonychia, 139, 140 ; of Stentor, 156 



Africa, Tropical, antimalarial measures in, 

 106 ; Trypanosomic diseases of, 120 f. 



Agulma, 300, 307 



Agalminae, 307 



Agaricia, JfiS 



Agaricoides, 350 



Agassiz, 258, 312, 319 ; on classification 

 of Endocyclica, 533 ; of Clypeastroidea, 



'• 548 



Aggregate, formation, in Microgromia, 59 ; 

 social, of VorticeUa, 158 ; (rosette) of 

 Treponema, 120 



Aggregation of plasmodia into aethalium. 

 92 f. 



Agitation, stimulus of, 10 f. 



Aglaophenia, 276, 279 



Aglaophenopsis (Plumulariidae, ;?7.9), 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 



Aleock, 268 



Alcyonacea, 3^6 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 



Alci/omum, 330 f., 332, 349 ; nematocyst 

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

 349 ; larva, 341 ; .1. ghwicmtum, 349 ; 

 A. pahiiiitirm, 310 ; A. pu rpureuin, 338 



Aleurone, 37 



Algae, related to holophvtic colonial 

 Flagellata, 109, 130 



Algeria, dourine disease in, 119 



Alicia mrrabilis, 382 



Aliciidae, 382 , 



Alimentary canal, of Asterias rubens, 438 ; 

 of Opliivthrix fragilis, 485 ; oi Echinus 

 escidentus, 516 ; of Echinarachnius 

 parma, 546 f. ; of Echinocardium cor- 

 datum, 551 ; of Antedon rosaxea, 583 ; 

 oiHyocriaiis, 589 ; oi Actinometra, 589 ; 

 development of, in Eleutherozoa, 604, 

 605; in Antedon rosacea, 618, 619 



Allen, on food of Echimis escidentus iu 

 Plymouth Sound, 516 



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

 Cystoflagellates, 135 



AUogromia, 59 f., 65 



AUogromidiaceae, 58 ; habitat of, 48, 59 



Alhpora, 287 ; A. nobiiis, 287 



A/pheu.s, 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 Le2)logonaster, 456 



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

 in Ciliata. 142 ; in Sti/hnychia, 140 ; 

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

 .79, 84 



Alceolina, 59 



Alveolus, of Echinus escidentus, 526 



Alceopora, 397 . 



Aiiialthea (Fam. Corymorphidae, f 75), 266 



Aiubulacral area, oi Echinarachniusparma, 

 544 ; of Echinocardium cordcdum, 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 esculentus, 

 511 ; of Cidaridae, 533 ; of Sphaer- 

 echinus, 539; of Strongylocentrotus, 539; 

 of Echinarachnius parma, 544 



Amines, 15 



Ammodiscus, 59 



Amnion, 613 



Amniotic cavity, 613 



