700 



INDEX 



Basal plate, of Craniata, 76*, 77 

 Basi-branchial, 150*, 207 

 Basi-branchial plate, 174, 175 

 Basi-branchiostegal, 207 

 Basi-cranial axis, 513* 

 Basi-cranial fontanelle, 125, 127 

 Basi-dorsal, 147 

 Basi-facial axis, 513* 

 Basi-hyal, 77, 78* See Skull 

 Basi-occipital, 79*, 80 See Skull 

 Basipterygium, 209, 210 

 Basi pterygoid processes, of Birds, 390, 



427 : of Lizard, 318, 319 

 Basis cranii, 76* See Skull 

 Basi-sphenoid, 79*, 80 See Skull 

 Basi-temporals, 388, 389 

 Basking sharks, 178, 187 

 Bastards, 665* 

 Bates, H. W., 684 

 Bathy metrical distribution, 634 

 Bats, 485, 508, 516, 570 See Chiroptera 

 Bdellostoma, 138, 139, 141, 142, 143 

 Bdellostoma forsteri, 139 

 Bdellostoma stouti, 142 

 Beak in Teleostomi, 225 

 Beak of pigeon, 379 : of Neornithes, 420 

 Beaked whales, 480 

 Bear, 484, 505, 545, 546, 547, 569, 582, 



599 



Beavers, 484, 506, 547 

 Bee-eaters, 417 

 Bellonius, 669 

 Belly, of muscle, 274* 

 Belodon, 370 ' 

 Beneden, E. van, 688 

 Benthos, 636* 

 Beryx, 640 

 Biceps muscle, 276 

 Bicipital groove, 455 

 Bile, 87* 



Bile ducts, 88 See Liver 

 Biogenesis, 671* 

 Birds See Aves 



Birds of Paradise, 417, 424, 622, 443 

 Blackbirds, 417 

 Bladder, urinary, of Craniata, 120 : 



Trout, 215 : Teleostomi, 239 : Rabbit, 



473 : Mammals, 582 

 Blainville, 681 

 Blastocoele, 288* 

 Blastodermic vesicle, 588 

 Blastula, of Amphioxus, 56, 57 

 Blenny, 241 

 Blind-snakes, 335, 367 

 Blind-worm, 339, 342, 362, 369 

 Blood, 97 See Vascular system 

 Blood corpuscles, 52, 97 See Vascular 



system 



Blood vessels See Vascular system 

 Boar, 565 

 Boas, 335, 367 

 Boatswain-bird, 415 



Body-cavity See Crelome 



Body, of vertebra, 74* 



Body- wall, of Amphioxus, 46 : of 

 Craniata, 69 



Boltenia, 25 



Bombinator, 302 



Bones, of Craniata, 78 



Bonnet, 674 



Bony labyrinth, 406 



Bony Pike, 196, 219, 225 



Botryllus, 23, 25, 26 



Bottle-nosed whales, 480, 516 



Boucher de Perthes, 686 



Bougainville, 676 



jBovidce, 482 See Oxen 



Bowerbank, 682 



Bower-birds, 443 



Bow-fin, 196, 219, 220 



Brachial plexus, 284* 



Brachium, 69, 314 



Bradypodidw, 479 See Sloths 



Bradypus tridactylus, 527, 528. 529, 530, 

 571 



Brain, Amphioxus, 54 : of Craniata, 98, 

 100: Lamprey, 131, 132: Dog-fish, 

 157, 158, 159, 160: Elasmobranchii, 

 178: Holocephali, 193, 194: Trout, 

 212, 213 : Teleostomi, 238 : Ceratodus, 

 253 : Frog, 284, 285 : Amphibia, 308, 

 Lizard, 328, 329, 330 : Reptilia, 360 : 

 Pigeon, 403, 404, 405: Aves, 434: 

 Rabbit, 468-472 : Mammals, 576-580 



Brain-case of Craniata, 76 



Branchia, of Salpa, 27*, 28 



Branchiae, of Amphioxus, 48: Lamprey 

 130 : Dog-fish, 154 : Elasmobranchii, 

 178: Holocephali, 192: Trout, 212: 

 Teleostomi, 235 : Ceratodus, 251 : Tad- 

 pole, 290 : Amphibia, 296, 304 



Branchiae, external, 258, 289, 290, 304 : 

 internal, 291, 305 



Branchial apertures, of Amphioxus, 48, 

 49 : of Craniata, 67, 88* 



Branchial arches, of Craniata, 77* 



Branchial basket, of Lamprey, 126-128 



Branchial clefts, 2* See branchial slits 



Branchial filaments, of Craniata, 89* 



Branchial junctions, Amphioxus, 49 



Branchial lamella?, of Amphioxus, 48, 

 49 



Branchial nerves, of Craniata, 104, 106 

 See Brain 



Branchial rays, 150, 174 



Branchial rods, of Amphioxus, 48, 49 



Branchial slits, of Balanoglossus, 3, 4 : 

 Amphioxns, 48, 49, 62 : of Cephalo- 

 discus, 10 



Branchio-cardiac vessel, 20, 18 



Branchiostegal membrane, 199, 225 



Branchiostegal rays, 199, 203 



Branchiostoma, 44 See Amphioxus 



BranchiostomidcK, 44 



