53 COMPARATIVE ANATOMY AND PHYSIOLOGY. 



Balanoglossus ; figure, 86 



Balanus, 69 



Balistes ; teeth, 144 



Bdellostoma ; kidneys, 259 



Beroe ; mouth, 113 



Birds, 97; tongue, 154; oral 

 glands, 159 ; crop, 162 ; gizz.ird, 

 163 ; intestine,- 169 ; bursa f a- 

 hricii, 170 ; vitelline duct, 171 ; 

 arterial arches, 205 ; lungs, 239 

 kidneys, 261; metallic colours 

 273; vertebrae, 316, 321; jaws 

 340 ; furcula, 349 ; limbs, 352 

 feathers, 366; wings, 336 ; voice 

 390; brain, 423; spinal cod 

 430 ; sensory organs, 437, 442, 

 455, 470 ; gonads, 506 



Boltenia, 88 



Bonellia ; proboscis, 118 



Bothriocephalus ; joints, 50 ; go- 

 nads, 455 



Botryllus, 88 ; development, 544 



Brachionus, 52 



Brachiopoda, 100 ; shell, 311 



Branchippoda, 67 j figure, 66 ; re- 

 spiration, 223 



Brissopsis ; nervous system, 399 



Bryozoa, 101 ; intestine, 120 ; cell, 

 288 ; gonads, 489 



Buccinum, 82 



Bugula ; figure. 101 



Butiriuus, IK) ; intestine, 168 



Caducichordata, 87 ; sene-cells, 



431 



Casciliee, 93 ; penis, 520 

 Calcispongiee, 35 

 Caligus ; gnathites, 179 

 Camels ; water-bag, 167 ; foot, 357 

 Cardium, 80 

 Carinella, 85: nervous system, 



398 



Carmarina ; nervous system, 396 

 Carnivora, 99 ; jaws, 342 

 Caryophyllseus.'SO 

 Centetes; lower jaw, 342; teats, 



523 



Centrogouida ; organisation, 69 

 Cephalochordata, 86 ; digestive 



tract, 138; vascular system,193; 



respiration, 231 ; renal organ, 



257 ; gonads, 506 



Cephalopoda ; ink-bag, 138 ; bran- 

 chial hearts, 192; gills, 221; 



funnel, 222 ; renal organ, 255 ; 



ear, 463 ; gonads, 503 

 Ceratodus ; teeth, 144; heart, 195, 



202 ; fin, 362 

 Ceratospongias, 36 ; skeleton, 278 



Cestoda, 49; nitrogenous waste, 

 250 ; hooks, 287 ; gonads, 485 



Cestus, 45 ; figure, 46 



Cetacea, 99; teeth, whale-bone,153 ; 

 salivary glands, 160 ; retia mi- 

 rabilia, 209 ; respiration, 242; 

 kidneys, 281 ; skull, 344 ; tail, 

 381 ' 



Cetochilus ; figure, 68 



Chalina, 36 



Chamselpon ; tongue, 154 ; chro- 

 matophore-', 27 ' 



Chsetoderinatidae, 81 



Chsetodon, 93 ; teeth, 144 



Chsetognatha, 101 



Chelonia, 96 ; fins, 97 ; intestine, 

 169; bursse auales, 170; fin, 

 353, 384. Se Tortoise. 



Chirocentrus, 90 ; intestine, 168 



Chiroptera, 99 



Chitonidee, 81 ; shell, 306 ; eyes, 457 



Chordata, 86 ; digestive tract, 

 138 ; vascular system, 192 ; re- 

 spiration, 230; skeleton, 312; 

 nervous system, 415; eye, 452; 

 gonads, 505 ; larvae, 530 



Cicada : vocal organ, 389 



Ciduris, 63 



Ciliata, 30 



Cirripedia, 69 ; shell, 299, 304 



Clione, 82 



Clypeaster, 63 



Cockroach ; zoological position, 

 76 ; figure, 76 ; gnathites, 130 ; 

 intestine, 133 ; gonads, 497 



Coelenterata, 36, 40 ; trophosomes, 

 109 gastro-vascular canals, 185 ; 

 respiration, 211 ; nitrogenous 

 waste, 248 ; gonads, 484. See 

 also Medusse. 



Coleoptera ; characters, 77 ; 

 gnathites, 131; stomach, 133; 

 elytra, 298 ; vocal organ, 389 



Copepoda, 68 



Corallinm ; coral, 282 



Cordylophora, 40 



Crania ; figure, 100 



Craspedota, 40 



Crayfish ; mouth organs, 123 ; gas- 

 tric mill, 125 ; heart, 187 ; re- 

 spiration, 223; scaphognathite, 

 123, 225; green gland, 253; 

 skeleton, 301 ; nervous system, 

 413; sensory organs, 439, 449, 

 451 ; gonads ; 495 



Crinoidea; organisation, 58; di- 

 gestion in, 121 ; skeleton, 292 ; 

 nervous system, 408; gonads, 



