INDEX 



705 



Diaphorapteryx, 625 



Diaphragm, '458 



Diaphragm, of Craniata, 72 



Diastema, 458 



Diazona, 23 



Dicotyles, 482, 599 



Didelphyidce, 478, 492, 495, 521, 524, 



563, 584, 598, 602, 629, 633 

 Didelphys dorsigera, 583 

 Didelphys marsupialis, 563, 564 

 Didelphys virginiana, 494 

 Dididai, 417 

 Diduncidus, 633 

 Didus, 416, 417, 430, 444 

 Diencephalon, of Craniata, 100* 

 Diffuse placenta, 595 

 Digestive system, of Balanoylosms, 4, 5 : 

 Ascidia, 19 : Appendicularia, 29 : Sim- 

 ple Ascidians,29: Composite Ascidians, 

 29 : Salpa, 29 : Doliolum, 29 : Crani- 

 ata, 84 : Lamprey, 128 : Myxine, 141 : 

 Dogfish, 152, 153 : Elasmobranchii, 

 177 : Holocephali, 192 : Trout, 210, 

 211 : Teleostomi, 233 : Ceratodus, 250 : 

 Frog, 276, 277 : Amphibia, 304 : Lizard, 

 323, 324 : Reptilia, 355, 356 : Pigeon, 

 396, 397 : Aves, 433, 434 : Rabbit, 458 : 

 Mammals, 557 

 Digitals, 385* 

 Digitigrade, 37o 

 Digits, 69 See Limbs 

 Dingo, 599, 63 J 

 Dinoceras, 608 

 Dinornis robust HH, 431, 42 

 Dinornithes, 411, 427, 430, 436 

 Di)iornithid(e, 411, 443 

 Dinosauria, 337*, 374, 375 

 Dinotheridtr, 606 

 Dinotherium giganteum, 607 

 Diomedea, 415, 430, 436 

 Diphycercal, 190*, 230 

 Diphyodont, 476* 

 Diploblastic, 617 

 Dipneumona, 257* 



Dipnoi, 66, 246: Example, 246: Dis- 

 tinctive characters and classification, 

 257 : General remarks, 257 

 DipodidcK, 484, 547, 549 

 Diprotodon australis, 602, 603, 642j 

 Diprotodont, 562 

 Diprotodontia, 478*, 496, 602 

 J)il>terus, 260 

 J)ipux, 506 



Discoidal placenta, 595 

 Dispersal, 626 

 Distalia, of Craniata, 83* 

 Distinctive characters and classification 

 of Acrania, 64 : Craniata, 66, 123 : 

 Cyclostomi, 137: Elasmobranchii, 166; 

 Teleostomi, 217 : Dipnoi, 257 : Am- 

 phibia, 292 : Reptilia, 334: Aves, 408 : 

 Mammals, 476 



Distribution, of Acrania, 64 

 Distribution, geological, 638 

 Distribution, geological, of Cyclostomi, 

 143 : Elasmobranchii, 187 : Holoce- 

 phali, 196 : Teleostomi, 243 : Dipnoi, 

 257 : Amphibia, 312 : Reptilia, 370, 

 371 : Aves, 443 : Mammals, 600 

 Distribution, geographical, 619 

 Distribution, geographical, of Cephalo- 

 discus, 12 : of Rhabdopleura, 12 : of 

 Urochorda, 42 : of Cyclostomi, 143 ; 

 Holocephali, 188 : Teleostomi, 242 : 

 Dipnoi, 257 : Amphibia, 312 : Reptilia, 

 369, 370 : Aves, 442 : Mammalia, 598 

 Divers, 414, 444 

 Diverticulum, cesophageal, of Balano- 



glossus, 4, 6 



Dodo, 416, 417, 426, 430, 444, 642 

 Dogfish, 70 See Scyllium and Hemis- 



cy Ilium 



Dogfishes, 169-188 

 Dogs, 484, 505, 514, 545, 546, 547, 560, 



569, 577, 599 

 Dohrn, Anton, 684 

 Dolchinia, 23 

 Doliolida?, 23 



Doliolum, 23, 27, 29, 30, 31, 39, 40, 43 

 Dolphins, 480, 501, 560, 561 

 Dominant characters, 665* 

 Dorsal aorta, 92 See Vascular system 



orsal fissure, 98*, 99 

 Dorsal lamina, 1 8, 19 

 Dorsal shield, Pteraspis, 261 

 Dorsal tubercle, of Ascidia, 20, 21 

 Dorsal root, of spinal nerve, 91* 

 Doves, 416 



Down-feathers, 381, 383% 423 

 Draco, 366, 344, 369, 638 

 Draco volans, 366 

 Drepanaspidce, 261, 262* 

 Drepanaspis gemnndenensis, 262 

 Drepanidce, 633 

 Drorneeognathous, 428* 

 Drom&us, 410, 421, 423, 425, 430, 432, 



442 



Dromatheriurti, 600 

 Dryopithecus, 610 

 Dryornis, 413 



Duck-Bill, 478 See Ornithorhynchns 

 Ducks, 416, 421, 428, 429 

 Ductless glands of Crapiata, 88, 120 

 Ductus Botalli, 304, 306* 

 Ductus Cuvieri, 156* 157 

 Ductus endolymphaticus, 332 

 Dugong, 481, 511, 516, 534, 535, 536, 



568, 598, 606 

 Dujardin, 679, 682 

 Dumb-bell-shaped bone, 520 

 Duodenum, 152* : of Pigeon, 397 : Ral- 

 r^bit, 460 

 Duplicidentata, 488 

 Dura mater, 103* 



