INDEX 



(References to figures in Clarendon type) 



. 1 

 Abdominal pores, 251 



Acantt 



brain, S2, 93 

 rlioinlrorranium, 313 

 egg-shell, 478 

 In-art, 374 

 liver, 187 

 muscle-buds, UOS 

 spinal iranglia, 12? 

 spim>. 822 

 . 1 //*/, - 



aivualia, 295 

 cement-organs, 180 

 egg, *' 



-ill-lamellae, origin, 160 



segmentation, 23, 24 

 Acroehordal cartilage, 315 

 A.ctinopterygii 



LruMnilatiou, 46 



nares, 125 



pylorie caeca, 191 



segmentation. 19 

 Adrenal, 282 

 Air- bladder 



evolution of, 17:i 



of Teleosts, 166, 167 

 Air-sacs, 164, 165 

 Allantoie vein, 423 

 All.mtois, -Jl'2, 471, 476, 549 



. I////V.S- 



oviposit ion, 461 



Anififi/fifoiiKi ( Sii-i'i/nn = Axolotl) 

 arcualia, 296 



eye, 1 11 



gornid, 269, 272 



vertebral centra. 300 



vomer with teeth, 332 

 Amic 



air-bladder, 168 



cement- organ s, 178, 181 



segmentation, 24 



vertebrae, 297, 339 

 Anmion, 465 



evolutionary origin, 47T>, 476 

 Amniota 



buccal cavity, 148 



Amniota (continued) 



external gills, physiological replacement 

 of, 157 



gastrulation, 47 



haemal arches, 297 



nares, 126, 151 



sclerotome, 205 

 Amniotic isthmus, 469 

 Amphibia 



adaptations in early development, 458 



egg, 2, 27 



endolymphatic duct, 132 



gastrulation, 38 



gonad, 268 



heart, 389 



mesoderm, origin, 60 



opisthonephros, 251 



pharyngeal clefts, 159 



practical hints, 566 



pronephros, 235 



segmentation, 27 



testicular network, 279 



vertebral centra, 299 



.1 nifiliiuXUS 



brain, 96 



egg, 2, 3 



gastrulation, 30, 31 



gonad, 267 



liver, 186 



rnesoderm, origin, 57 



practical hints, 558 



sclerotome, 285, 286 



segmentation, 7, 8, 9 

 Ampulla, 130 



Ancestry of Vtrtebrata, 503 

 Anura 



cement-organs, 80 



horny jaws, 75, 76 



oral combs\ 75, 76 

 Anns, 51, 144, 192, 194, 497 

 Aortic arches, 394, 395, 396, 397, 398, 401 

 Apical, 4 



Archencephalon, 85, 92 

 Archenteron, 30 

 Archinephric duct, 221, 225, 238, 239, 240, 



241 

 Archiuephros, 221 



583 



