6i8 



INDEX 



Cyathomonas, 46; 11, 41 



C trimcata, 47 



Cyathozooid, 603 ; 605 



Cyclas, 504 



Cyclestheria hislopi, 299 



Cyclomyaria, see Doliolida 



Cyclops, 331 ; 190, 202, 223, 315, 316, 



332, 333, 333, 334, 335 

 Cyclosalpa, 607 ; 604 

 Cyclospora, 28 

 Cyclostomata, 537 

 Cyphonautes larva, 534; 535 

 Cypris, 331; 305, 330 

 Cypris larva, 316, 340, 341, 343, 344, 



345 

 Cyrtoceras, 528 

 Cysticercus, 202; 204 



C. pisiformis, 202 

 Cystoflagellata, see Noctiluca 

 Cystoidea, 582 



Cysts, 16 ; 8 ; Resistance, 17 ; Resting, 

 18. See also Gamocysts, Oocysts, 

 Sporocysts 



Cytostome, 15; 97 



Dactylopiiis coccus, 420 



D. tomentosus, 420 

 Dactylopodite, 300 

 Dactylozooids, 143 ; 145 

 Dalyellia viridis, 189; 182 

 Daphnia, 325 ; 317, 328 

 D. pulex, 327 



Dart, 226 



Dart sac, 486 



Dead men's fingers, see Alcyonium 



digitatum 

 Decapoda, Cephalopoda, 513, 524; 



Crustacea, 361 

 Deep oral nervous system, 554 

 Deima, 577 ; 576 

 Demodex follictdorum, 469 

 Demospongiae, 118; 116 

 Dendritic tentacles, 573 

 Dendrochirotae, 577 ; 575 

 Dendrocoeliim lacteum, 178, 187,187, 



189 

 Dendrocometes, 109; 28 n. 

 D. paradoxus, loi 

 Dendroid graptolites, 150 

 Dense nuclei, 19 

 Dentalium, 498 ; 498 

 Depression, 30 

 Dermal layer, no 

 Dermaptera, 411 



Detorsion, 479 

 Deutocerebrum, 274, 305 



Deutomerite, 90 



Development, see Embryology, Lar- 

 vae, Life cycle 



Diastylis, 354 

 D. stygia, 354 



Dibothriata, 204 



Dibranchiata, 513; 523, 525 



Dicyclical rotifers, 213 



Didymograptus, 148; 149, 150 



D. affinis, 150 



D.fascicidatus, 150 



D. v-f r actus y 149 



Difflugia, 68 ; 8 



D. urceolata, 69 



Digestion, by Acarina, 462 ; by Al- 

 cyonium, 160; by Arenicola, 240; 

 by Arthropoda, 278 ; by Aurelia, 

 153; by Coelenterata, 126; by 

 Crustacea, 308; by Daphnia, 328; 

 by Helix, 486; by Insecta, 390; 

 by Lamellibranchiata, 503; by 

 Oligochaeta, 254; by Ostrea, 510; 

 by Physalia,i45 ; by Protozoa, 15 ; 

 by Rotifera, 212; by Teredo, 511 ; 

 by Turbellaria, 181; by Zoan- 

 tharia, 164. See also Alimentary 

 canal, Circulation of food, External 

 digestion 



Digestive caeca, see Digestive gland 



Digestive gland, of Arachnida*, 

 445, 450, 457, 458 ; of Brachiopoda, 

 540; of Mollusca*, 470, 485, 494, 

 503, 520. See also Liver, Mesen- 

 teric caeca 



Digestive system, of Alcyonium, 159 ; 

 of Aurelia, 152; of Medusae, 130; 

 of Platyhelminthes*, 181, 188, 

 189, 190, 198; of Zoantharia, 164, 

 165, 166. See also Alimentary 

 canal, Enteron 



Dimorpha, 78 



D. mutans, 79 



Dimorphic shells, 70 



Dinamoebidium, 49 



Dinobryon, 44 



D. sertularia, 45 



Dinoflagellata, 48; 43,46 n., 75 



Dinophilus, 262; 261, 262, 263 



Dinophysinae, 49 



Dinothrix, 49 



Diotocardia, 489 ; 478, 490 



Diphyes, 145 



