314 



INDEX. 



Attrceida>, US, 120 

 Astrogonium, 140 

 Astrdpecten, 140 

 Attroptctinidce, 131 

 Aatrophydice, 132 

 Astrophyion, 131 

 ^4 thorybiadce, 84 

 Atfiyris, 247 

 Atlanta, 267 

 Atlan(ida;,'2C>5, 267 

 Atolls, 115, 116 

 Atrial system (Brachiopoda), 



246 



Atrium (Tunicata), 241 

 Auloporidce, 120 

 Aulostegis, 248 

 Aurelia, 93 

 Aurelia, 215 

 Auricula, 268 

 Auriculidv, 265, 268 

 Avicula, 256 

 Avicularia, 236 

 AviculiddB, 255, 256 

 Axinus, 256 



Bacteria, 33 



Bactrites, 284 



Baculites, 280, 282 



Balancers, 222 



Balanidce, 111, 179, 180, 181, 

 182 ; distribution of, in time, 

 196 



Balanus, 180 



Barrier-reefs. 115, 116 



Barnacles, 181 



Bathybius, 9, 50, 51 



Bees, parthenogenesis of, 29, 

 SO, 224 ; communities of, 223 



Belemnitfs, structure of, 277 



Belemnitidce, 277, 281 ; distri- 

 bution of, in time, 284 



Belemnitella, 281 



Belemnoteuthis, 281 



BeUnurus, 196 



Bellerophina, 283 



Betlerophon, 267, 283 



Beloptera, 282 



,e?w, 113 



Beroida?, 114 



Bird-lice, 217 



Bivalve (Shells), 251, 252 



Bladder, contractile, of Roti- 

 fera, 15G 



Blastoidea, 123 ; general cha- 

 racters of, 136 ; distribution 

 of, in time, 139 



Blattina, 219 



Bombida;, 224 



Bopyridw, 191 



Bothriocephalus, 143 



Botryltidte, 244 



Botryllus, 243 



Bourgueticrinus, 134 



Brachiopoda, 232 ; general 

 characters of. 244 : shell of, 

 24") ; arms of, 246 ; atrial 

 system of, 246 ; nervous sys- 

 tem of, 247 ; vascular sys- 

 tem of, 247; divisions of, 

 247, 248 ; distribution of, in 

 space, 249 ; in time, 249, 250 



Brachiuna, 178 



Brachymetopus, 196 



Brachyura, 111 ; characters of, 

 194; development of , 195 



Bracts. 80 (see Hydrophyllia) 



Branchial hearts (Cuttle- 

 fishes), 272 



Branchial sac (Tunicata), 241, 

 242 



Branchifera, 260, 262, 265 



Branchiogasteropoda, 260, 262 



Branchiopoda, 177 ; charac- 

 ters of, 184 



Branchipus, 185 



Bryozoa (see Poli/toa) 



Buccinidai, 262, 265 



B'ticcinum, 262, 265 



Bulla, 267 



Bull idee, 263,267 



Bulimus, 267 



Bursaria, 63 



Byssus, 255 



Calamaries, 276 



Ca/carea (Sponges), 57 



Calceola, 248 



Calceolidce, 248 



Calice (Corals), 102 



Calfianiridce, 114 



Callograpsus, 9(> 



Callymnridce, 114 



Cah/cophoridce, 79 ; polypites 

 of, 80 ; pyloric valve of, 80 ; 

 tentacles of, 80 ; reproduc- 

 tion of, 81 : development of, 

 81 ; distribution of, 96 



Calyptrcea, 266 



CalyptrcEidce, 263, 266 



Calyx (of Vorticella), 60 



Campanularida, 78 



Canals, of Sponges, 55 ; of 

 A/cyonaria, 107 ; of Cteno- 

 phora, 112 



Capitulum (Lepadidce), 181 



Capriiiella, 256 



Carapace, of Difflugia, 45 ; of 

 Arcella, 45 ; of Vayinicola, 

 63 ; of Crustacea, 173, 174 ; of 

 Lobster, 173, 174, 192 ; of 

 Crab, 194 



Carchesium, G3 



Cardiadce, 255, 256 



Cardinal, 257 



Carinaria, 229, 267 ; distribu- 

 tion of, in time, 283 



Carpenteria, 50, 51 



Carriage - spring apparatus 

 (Brachiopoda), 246 



Carteria, 104 



Caryocaris, 196 



Cassis, 265 



Cells of Pohjzoa, 234 



Cement-gland of Cirripedes,l78 



Centipedes, 207 



Cephalobranchiata, 164 (see 

 Tubimla) 



Cephalopoda, 258 ; general 

 characters of, 269 ; arms of, 

 271 ; suckers of, 271 ; funnel 

 of, 271 ; ink-bag of, 271 ; 

 mandibles of, 2 71; 



system of, 271 ; branchiae 

 of, 271 ; nervous system of, 

 272 ; vascular system of, 

 272 ; reproduction of, 272 ; 

 skeleton of, 274 ; divisions 

 of, 274 ; distribution of, in 

 time, 283 



Cephalophora, 251, 258 



Cephalothorax, of Crustacea, 

 171, 172 ; of Arachnida, 198 



Cephaluna, 178 



Cepfiea, 93 



Ceratiocaris, 196 



Ceratites, 282 



Cerithiadce, 263, 266 



Cerithium, 266 



Cestidce, 114 



Cestoidea, 142 (see Taeniada) 



Cestum, 114 



Cha;tognatha, 169 



Chcetonotus, 156 



Chama, 256 



Chamidce, 255, 256 



Cheilostomata, 239 



Chela;, 176; of King-crab, 

 187 ; of Scorpion, 198 



Chelicera?, 198, 203 



Chelifera, 202 



Chemnitzia, 266 



Chilognatha, 207 



CMlopoda, 207 



Chiton, 267 



Chitonidce, 263, 267 



Clionetes, 248 



Chromatophores, 270 



Chrysalis, 215 



Chylaqueous canals (Medusas), 

 85 



Chylaqueous fluid, of Rotifera, 

 156; at Annelida, 1GI, 166 



Chyliftc stomach of Inseots, 

 212 



Chyme-mass of Infusoria, 59, 

 61 



Cicada, 218 



Cid-aridce, 128 



Cilia, of Sponges, 56 ; of In- 

 fusoria, 59, 64 ; of Actino- 

 zoa, 97 ; of Ctenophora,\\.\ ; 

 of Echinus, 127 ; of Anne- 

 lid es, 162 



Ciuclides, 101 



Cinulia, 2C7 



Cirrhi, of Annelides, 161 ; of 

 Cirripedia, 180 ; of Brachio- 

 poda, 246 



Cirrhopoda (see Cirripedia) 



Cirripedia, 177 ; general cha- 

 racters of, 178,179; develop- 

 ment of, 179 ; shell of, 180, 

 181 ; reproduction of, 181 ; 

 divisions of, 182 ; distribu- 

 tion of, in time, 196 



Cladocera, 177 ; characters of, 

 184 



Classification, 17 



Clausilia, 267 



Clarellinidce, 244 



Cleodora, 269 



Clepsine, 168 



Cliidcc, 269 



us, 96 



digestive Climacograpsi 



