478 



INDEX 



Portheus, Figs. 36, 283, 288 



chondrocranium of, 144 



palatine process of, 142 

 Pre-epiotic fossa, 149 

 Preethmoid, 94, 190 

 Premaxilla 



adaptive radiation of. Fig. 283 



Allis on, 96 



of carps, 189 



protrusion of, 242 

 Preopercular 



position of, 426, 427 



Ridewood on, 427 



spikes of, 332, 427 

 Pre-oral cartilages, 80 

 Preorbital region, 92, 93 

 Priacanlhus, 247, Fig. 120 

 Prionotus, Fig. 218 



mesethmoid of, 440 



preopercular of, 427 



skull of, 341, 343 

 "Proboscis," 172 

 Proethmoids, 93, 94 

 Promethichthyi, Fig. 194 

 Pronotacanthus, 201 

 Protopterus, 353 

 Protosphrycsna, 440 

 Protospondyli 



"circumorbital" arrangement of oper- 

 cular series of, 428 



Woodward's researches on, 123 

 Protrusility, see also Jaws, Mouth 



in Antigonia, ITi 



of carps and suckers. Fig. 74, 189 



conditions of, 242 



in Epibulus, 257 



in Get res, 253 



independent evolution of, 424 



in Lates, 239 



mechanism of, in upper jaw, 239 



in percoid jaw, 239 



stages preceding, 242 



in Velijer, 298 



in Zeus, 271, 272 

 Psettodes, 345 

 Psettus, Fig. 297 



differential growth rates of, 434 



skull of, 274, 275 

 Pseudoscarus, Figs. 133, 134, 283 

 Psychroluies, 339 

 Pterois, Fig. 205 

 Plerophryne, 388, 389 

 Ptilichthys, Fig. 297 

 Puffers, see Tetraodonts 

 Pycnodonts, 123, 127 



Rachycentron, Figs. 186, 187 



classification of, 307 



comparison with echeneids, 319 

 " Rhachicenlrum,'" 307 

 Ranzania, 295 

 Rastrelliger, 319 



Raven, H. C. 



dissection of Mola by, 294 

 Rays, see Elasmobranchs 

 "Rectigradations," 446 

 Regalecus, Fig. 175 



skull of, 297 



Parker on, 297 

 Regan, C. Tate 



on /I lobes, 352 



on Allotriognathi, 295 



on Ammodytes, 201 



on Amphipnous, 350 



on Anacanthini, 380 



on antennariids, 391, 392 



on Bathymaster, 358 



on Blennioidei, 374 



on Brama, 306 



on carangoids, 300 



on catastomids, 193 



on Ceratiidae, 389, 401, 403, 404, Fig. 

 277 



on Cetomimidae, 211 



on ChsetodontidjE, 274, 281 



on cichlids, 255 



on Cirrhitidae, 259 



on Cor>'phaenidae, 306 



on Cretaceous acanthopts, 301 



on Cromeria, 156 



on Enchodontidae, 205 



on Epibulus, 257 



on Gadidae, 380 



on gasterosteids, 228 



on Gerres, 253 



on Gigantactinidse, 404 



on gobioids, 350 



on GonostomatidjE and Elopidje, 157 



on Halosaurus and Notacanthus, 201 



on Haplomi, 214 



on Heterosomata, 344 



on Himantolophus, 407 



on Hoplegnaihus, 250 



on interopercular, 425 



on Isospondyli, 157 



on Labyrinthici, 269 



on Lyomeri, 213 



on Masiacembelus, 354 



on Melanocetidae, 404 



on Molidas, 294 



on Mullidje, 251 



on notothenioids, 358 



on Oneirodidas, 404 



on Ophiocephalidae, 270 



on Pediculati, 386 



on Percesoces, 223, 264, 266 



on Perciformes, 247, 274 



on Percomorphi, 237, 246 



on Percophis, 363 



on Pinguipedidse, 256 



on Pogonias, 252 



on Pol>Tiemidae, 268 



on pomacentrids, 255 



on protrusility, 424 



on " Rhachicentrum," 307 



on Sardinoides, 207 



on Scombresocidae, 264 



on Stylejihorus, 299 



on Trachypterus, 296 



on Trichodontidae, 371 



on Triodon, 286 



on Velijer, 296 



on Zoarces, 376 



on Zeomorphi, 271 

 Regulation 



by endocrine glands, 445 



by "organizers," 447 



of size relations, 444 

 Remora, 320 

 Relropinna, 157 

 Rhineodon, 424 

 Rhinosphenoid, 94 

 Rhombus, 306 

 Rhynchobdella, 353 

 Rhynchoceratias, Fig. 281 



first stage in evolution of " Aceratiidae," 

 410 



illicium of, 407, 408 



parietals retained in, 403 



Parr on, 407 



pelvic bones in, 401 



rostral bone of, 407 

 Ridewood, W. G. 



on auditory fenestra of Hyodon, 168 



on cranial osteology of fishes, 412 



on dentition of Cretaceous Elopidae and 

 Albulids, 423 



on diverticula of air-bladder in 

 Clupeidae and Ostariophysi, 155 



on Gonorkynchus, 178 



on Hyodon, 168, 174 



on Notopterus, 169, 174 



on osteoglossids, 164 



on preopercular, 427 



on relations of Mormyridje, Notop- 

 taridae and Hyodontidi, 173 



on the "subtemporal bone" in salmon 

 and Chanos, 154 



on the "supra temporal" in osteoglos- 

 sids, 165 

 Ritter, William, 447 

 Roccus, Figs. 1, 119 



relations of mandible to muscles, 242 

 Rock-fishes, see Scorpaenoidea 

 Rose-fish, see Sebastes 

 Ruveltus, 315,319 



S 



Saccopharynx, 213 



Saccopharyngidae, 212 



Sagemehl, M. 



on mouth of carps, 189 



on primitive cyprinoid type, 193 



on relation of characins to Amia, 182 



Sail-fishes, see Histiophoridi 



Salanx, 157 



Salmo, Figs. 45, 46, 47, 48 

 eyes in, 439 

 otolith of, 163 

 "subtemporal bone" in, 154 



Salmonoidea, 153, 179 



Salmopercae, 232 



