634 



INDEX 



76 f.; of Proteomyxa, 90 ; of Sporozoa, 

 97 ; of Flagellata, 109 f. ; of Protomas- 

 tigaceae, 111 ; of Volvocaceae, 111 ; of 

 Infusoria, 136 ; of Ciliata, 137 ; of 

 Suctoria, 159 ; of Sponges, 183 f. ; of 

 Coelenterata, 249 f . ; of Ctenophora, 

 417 f. ; of Eleutherozoa, 430 f. ; of 

 Asteroidea, 459 f. ; of Ophiuroidea, 

 491 f . ; of Echinoidea, 529 f. ; of 

 Endocyclica, 532 ; of Clypeastroidea, 

 548 f. ; of Spatangoidea, 552 ; of 

 Holothuroidea, 567 f. ; of Pelmatozoa, 

 580 ; of Crinoidea, 589 f. 



Glathria, 225 



Clathrina, 186, 221, 231 ; C. blanca, 

 larva of, 227 



Clathrinidae, 185 f. 



Clathrissa, 223 



Clathrozoon, 277, 279 ; C. toilsoni, 279 



Clathrulina, 71, 73, 74 



Clava, 272 ; O. squamata, 263 



Glavatella, 267, 270 



Clavatellidae, 270 



Clavidae, 272 



Clavularia, 330, 334, 344 ', O. viridis, 

 329, 337, 343 f., 344 



Clavulariidae, 344 



Clearing of tissues, physical explanation 

 of, 11 



Climacograptus, 282 



Cliona, 219, 224 



Clionidae, 218 



Cloaca of Holothuria nigra, 563 



Clypeaster, 548, 549 



Clypeastridae ( = Echinanthidae), 549 



Clypeastroidea, 529, 5421, 556, 559, 566 



Clytia, 280 ; C. johnstoni, 275, 280 f. 



Cnidoblast, 247, 248 



Cnidocil, 248 



Cnidopod, 248 



Cnidosac, 300 



Coalescence of individual Rhizopods during 

 bud-fission, 55 



Coccidiaceae, 97, 99 f. ; relations to Try- 

 panosoma, 120 



Coccidiidae, 97, 99 f., 101 



Coccidiosis, 102 



Coccidium, 99 f., 101 f . ; G. cuniculi, 

 102 ; O. lacazei, syngamy of, 101 ; 

 O. schubergi, 99 f., 101 



Coccolithophora, 110 



Coccolithophoridae, in Chalk, 70 ; wall of, 

 114 



Coccoliths, 83, 110, 114, 242 



Coccoseridae, 346 



Coccospheres, 83, 114 



Cockroach, Lophomonas parasitic in gut 

 of, 123 



Codaster, 599 



Codosiga, 111 



Coelenterata, 243 f. ; definition, 245; almost 

 all immune from Gregarines, 99 



Coeliac canal of Antedon rosacea, 586 



Ooelogorgia, 349 



Coelogorgiidae, 349 



Coelom (including body-cavity), 428 ; of 

 Asterias rubens, 437 ; of arm of 

 Ophiothrix fragilis, 480 ; of Echinus 

 escidentus, 516 ; of Holothuria nigra, 

 562 ; of Antedon rosacea, 585 ; de- 

 velopment of first rudiment in larva, 

 605 ; subsequent development in Di- 

 pleurula, 608, 609 ; in Asterina gibbosa, 

 611 ; in Antedon rosacea, 618, 619 



Coelomic nervous system, of Asterias 

 rubens, 448 ; of Ophiothrix fragilis, 

 488 ; of Echinus esculentus, 524 ; of 

 Holothuria nigra, 566 ; of Antedon 

 rosacea, 584, 585 



Coeloplana, 412, 422 ; C. mitsukurii, 

 422 



Coeloplanidae, 422 



Coenocyte, 30 



Coenograptus, 282 



Coenopsammia, 404 



Coenosteum, 371, 387 



Coenothecalia, 344 



Cohn, Ferdinand, on cultures of Schizomy- 

 cetes, etc., 44 



Cold - blooded Vertebrates, as hosts of 

 Haemosporidae, 102 



Coleps, 137 ; mail-like pellicle of, 141, 

 152 ; C. hirtus, group feeding, 150 



Collar, of Choanoflagellates, 121 f., 122 ; 

 of peristome of Vorticella, etc., 156 



Collar-cells, in Choanoflagellates, 121 f., 

 122, 171, 237 ; of Calcarea, 186 ; of 

 Non - Calcarea, 176, 200 see also 

 Choanocytes 



Collencyte, 171 



Colletocystophores, 320 



Collida, 77 n. 



Colloblasts, 414 



Collodaria, 77 



Colloidea, 77 



Gollospha,era, 77 ; symbiotic Diatoms in, 

 86 



Collosphaeridae, 85 



Collozoidae, 85 



Collozoum, 77 ; C. inerme, 76 



Collyritidae, 559 



Colobocentratus, 532, 542 



Colonial, cells, 31 ; Protista, 31 



Colony, 31 ; of Collozoum inerme, 76 

 -formation in Polycyttarian Radiolari? 

 84 f. ; in Flagellata, 113 ; of Choano- 

 flagellates, 121, 122 ; in Vorticellidae, 

 158 ; of Volvocidae, 126 f. ; of Pan 

 dorina, 128 f. ; of Eudorina, 129 



Colour, red, of. lakes and ponds, often due 

 to Dinoflagellata, 131 



Coloured vegetal nutrition, 36 f. 



Colouring matter of chromatophores 

 Flagellates, 115 n. 



