INDEX 



Branchial heart of Loligo, formation of, 



362, 364 

 Branchiopoda, 177, 194 ; larval history of, 



200 

 Branchipus, 194, 196, 243 ; ancestral origin 



of, 212 



Brephic stage, development of, 19, 22 

 Buccal cavity, formation of, in Amphioxus 



lanceolatus, 604/; in Peripatus capensis, 



175 



Buccal cirri of Ajhphioxus lanceolatus, forma- 

 tion of, 606 

 Buccal tentacles, formation of, in Cucumaria 



planci, 542 ; in Synapta digitata, 533 

 Bii'l, definition of, 2 ; development of, in 



A Icyoniaium, 398 ; in Pedicellina echinata, 



403; in/SpongiUa, 47 

 Budding /in Polyzoa Ectoprocta, 396-398 ; 



in Urdchorda, 637-646 

 Bugula, corona of larva of, 395 ; development 



of buds of, 396-398 

 Buprestidae, 272, 277, 278 

 Butyric acid, use of, to produce membrane, 



17, 524 

 Byssus gland of Dreissensia, formation of, 342 



Calanus, 206 



Calcarea, 57 



Calcareous plates of young Cucumaria, 542 



Calcareous ring of Synapta digitata, forma- 

 tion of, 539 



Calcareous skeleton of adult Asterina gibbosa, 

 formation of, 477, 478 



Calcareous sponges, development of, in lime- 

 free water, 51 



Callianira, development of, 95 



Callidina russeola, development of, 418, 426 



Calyptoblastea, 53 ; definition of, 62 



Calyptopis, larva of Euphausiadacea, 209 



Calyx of Antedon rosacea, formation of, 

 551 



Capitella, 153, 167 



Capitellifornia, 128, 153 



Capsules containing eggs of Alloiocoelida, 

 Rhabdocoelida, Triclada, Cestoda and 

 Trematoda, 102, 103 ; containing eggs of 

 Prosobranchiata, Opisthobranchiata, and 

 Pulmonata, 320 



Carapace of Astacus,- 185 ; of pupa of 

 Cirripedia, 202 ; of larvae of Euphausia 

 and Penaeus, 203 ; of Nauplius, larva of 

 Ostracoda, 203 



Cardioblasts, formation of, in Clepsine, 163 ; 

 in Donacia, 256 



Gardium, 348 



Caridea, 177, 208, 213, 215 



Carina of Cirripedia, formation of, 202 



Cartilage of Cephalopoda, formation of, 365 



Caryophyllia cyathus, development of skeleton 

 of, 87 



Cataclysmic metamorphosis, definition of, 

 127 



Caterpillar larva of Lepidoptera and Hymen- 

 optera, 266 



Cathammal plate of Aurelia, development of, 

 73 



Caudal fork of Astacus, 187 ; of Cyclops, 

 formation of, 199 



Caudal lobe in the embryo of Agelena, 224 



Caudal spine of Nauplius larva of Cirripedia, 

 201 



Cell-lineage, definition of, 104 ; of eggs of 

 Hirudinea, 160 ; of eggs of Ischnochiton, 

 320 ; of eggs of Patella, 292-295 ; of eggs 

 of Phascolosoma, 373-375 ; of eggs of 

 Physa, 321 ; of eggs of Planocera, 104- 

 109 ; of eggs of Polygordius, 131-144 



Celloidin, use of, in embedding, 34, 35 



Cement organ of embryo of Pedicellina, 399 



Centipedes, 281 



Central coelom of Cribrella, development of, 

 481 



Central eyes, formation of, in Limulus, 237 ; 

 in Agelena, 232-234 



Centriole of male cell, 7 



Centro- dorsal ossicle of Antedon rosacea, 

 formation of, 558 



Centrolecithal, definition of, 27 ; segmenta- 

 tion of eggs of Crustacea, Arachuida, and 

 Myriapoda, 177 



Ceutrolecithal egg of Urticina crassicornis, 

 177 



Centroplasm of egg of Agelena, 222 



Centrosome, division of, 6 ; formed from 

 middle-piece of spermatozoon, 9 



Cephalic hood of Sagitta bipunctata, 432 



Cephalic lobes in embryo of Agelena, 224 

 in embryo of Astacus, 180, 189 ; in 

 embryo of Scorpion, 240 



Cephalic slits of Nemertinea, formation of, 

 in Pilidium larva, 123 



Cephalochorda, 568, 584, 605, 662 ; develop- 

 ment of, 586-604 



Cephalodiscida, 568, 569, 585, 606, 662 



Cephalodiscus, 381, 383 



Cephalopoda, 178, 291, 369, 370, 632 ; de- 

 velopment of, 353-368 



Cerambycidae, 272, 277 



Cereanthidae, 53, 86 ; larva of, 85 



Cerebral ganglion, formation of, in Dentalium, 

 329 ; in Dreissensia, 341 ; in Loligo, 358 ; 

 in Paludina, 315 ; in Patella, 301, 302 ; 

 in embryo of Pedicellina, 400 ; in larva of 

 Phascolosoma, 376 ; in Planocera, 110; in 

 Planorbis, 322 



Cerebral grooves, closure of, in embryo of 

 Agelena, 232 ; formation of, in embryo of 

 Agelena, 225 ; in embryo of Astacus, 

 184 ; in embryo of Peripatus capensis, 

 175 



Cerebral pit, formation of, in larva of Dreis- 

 sensia, 341 ; in embryo of Pedicellina, 

 400 



Cerebratulus lacteus, development of, 118-126 



Cestidea, 53 



Cestoda, 102, 103 



Chaeta sacs of larva of Terebratulina 

 septentrionalis, 411, 413 



