INDEX 



y pod id < i', 4.50, 470 



y2Jrocta, 476 



ypus sexcinctus, 470, 494, 499 



yure, 532 



yures, 449, 466, 489 



yuridtv, 449, 466 



yurus, 491 



yurus viverrinus, 466 



idiia, 447, 561 



icluate, 447, 561 



Bary, 640 



f 453 473 



i% Red, 504, 509, 510, 511 



ihinus, 450, 451 



lersal eggs, 225* 



drohyrax, 454 



tal formula, 530 



tal groove, 526 



tal lamina, 526 



tal papilla, 80, 526 



tal sac, 527 



tary, of Craniata, 74 



tine, 78, 79 



tition See Teeth 



ressor muscles, 256 



iial defences, 175 



nal teeth, 135 



matochelys, 323 



ms, of Amphioxus, 40 : Craniata, 63 



>tremata, 272* 



nognathous, 400* 



elopmerit, of Balanoglossus, 5 : Asci- 



an, 27, 28, 29, 30, 31, 32, 33 : Dolio- 



m, 33, 34: Salpa, 35, 36: Amphioxus, 



1-58 : Craniata, 114 : Lamprey, 126, 



17, 128 : Elasmobranchii, 168 : Holo- 



phali, 182, 183 : Trout, 200 : Teleos- 



mi, 225 : Ceratodus, 238 : F.rog, 266 : 



mphibia, 288 : Reptilia, 337 : Aves, 



>7 : Rabbit, 446 : Mammals, 552 



onian, 603 



soele, 94 



)hragm, 429 



jhragm, of Craniata, 64 



sterna, 429 



styles, 453 



elphyidce, 449, 466 



elphys dorsigera, 551 



elphys marsupialis, 531 



elphys virginiana, 466 



idee, 389 ' 



unculus, 597 



us, 388, 398 



icephalon, of Craniata, 94 



use placenta, 562 



istive system, of Balanoglossus, 3 : 



scidia, 16 : Appendicidaria, 25 : Sim- 



e Ascidians, 25: Composite Ascidians, 



> : Salpa, 26 : Doliolum, 26 : Crani- 



a, 78 : Lamprey, 120 : Myxine, 131 : 



ogfish, 141 : Elasmobranchii, 164 : 



olocephali, 178 : Trout, 195 : Cera- 



dus, 233 : Frog, 254 : Amphibia, 283 : 



Lizard, 302 : Reptilia, 329 : Pigeon, 

 368 : Aves, 405 : Rabbit, 426 : Mam- 

 mals, 525 



Digitals, 356 



Digitigrade, 484* 



Dingo, 5X(i 



Dinornis robustus, 403 



/Jiiiornithidie, 383, 414 



Dinosauria, 314, 346, 404, 415, 41 1>' 



DinotheridcB, 572 



Dinofherium, 454 



Dinotherium giganff-nm, 573 



Diomedea, 387 



Diopteric apparatus, 105 



Diphy cereal, 214* 



Diphyodont, 447 



Diploblastic, 581 



Dipneumona, 240* 



Dipnoi, 83 : Distinctive characters "and' 

 classification, 239: General remarks, 

 240 



Dipodidce, 457 



Diprotodont, 530 



Diprotodon australis, 568 



Diprotodontia, 449* 



Dipterus, 241 



Dispersal, 590 



Distalia, of Craniata, 77 



Distinctive characters and classification 

 of Acrania, 58 : Craniata, 59, 115: 

 Cyclostomi, 128 : Elasmobranchii, 154: 

 Teleostomi, 201 : Dipnoi, 239 : Am- 

 phibia, 271 : Reptilia, 311 : Aves, 380 : 

 Mammalia, 447 



Distribution, oi Acrania, 57 



Distribution, geological, 602 



Distribution, geological, of Cyclostomi, 

 133 : Elasmobranchii, 173 : Holoce- 

 phali, 183 : Teleostomi, 226 : Dipnoi, 

 241 : Amphibia, 291 : Reptilia, 342 : 

 Aves, 405 : Mammals, 566 



Distribution, geographical, 583 



Distribution, geographical, of Cvclostomi, 

 133 : Teleostomi, 226 : Dipnoi, 240 : 

 Amphibia, 290 : Reptilia, 341 : Aves, 

 414 : Mammalia, 564 



Divers, 386, 416 



Diverticulum, pharyngeal, of Balano- 

 yhxsus, 3 



Dodo, 388, 389, 398, 402, 416 



Dogfish, 63 See Chilos^yUinm and Scyl- 

 lium 



Dogs, 475, 514, 515, 528, 536, 539, 545 



Dohrn, Anton, 644 



Dolchinia, 19 



DoliolidcK, 19 



Doliolum, 19, 22, 23, 24, 34, 35 



Dolphins, 450, 451, 472, 501 



Dorsal aorta, 86 See Vascular system- 

 Dorsal tubercle, of Avidia, 18 



Doves, 388, 389 



Down-feathers, 355, 395 



