756 



INDEX 



Slc)/diicvi, 689 



Siei-Smelt, 569 



Sik, 568 



Sillagmidae, 6G£, 653 



Sillago, 66'^ 



Silondin, 5SS 



Sihtranodon, 5SS 



Silurichtkys, 5S8 



Sihiridae, ' 5A'6, 575, 163, 251, 275, 283 

 barbels, 154; intestinal respiration, 292 

 accessory respiratory organs, 293, 294 

 air-bladder, 302, 303, 305 ; sound-pro- 

 duction, 356-361, 363; connexion of 

 the air-bladder and auditory organ, 389, 

 390 ; nests, 416 ; protection of young, 

 593 



Silurinae, 555 



Sibtrodnn, 588 



Silurus, 555, 342 ; S. glanis, 592, 593, 

 358 



Silvestri, 594 



Simenchelys, 601 ; S. parasiticus, 603 



Simple Ascidians, 35, 36 f., 39 f., 70, 71, 

 110 



SinijKriv, 659 



Sipiions, 43, 53 



Siphonognathus, 674- 



Siijhonostoma, 634 ; "S- typihU, protective 

 coloration, 172 



Sirenoidei, 149 



Slsor. 588, 589 



Skates = Knia, q.v. 



Skeleton, of Eiiteropneusta, 14 ; of Ani- 

 phioxus, 119 ; of Fishes, 193 f. 



Skin, of Cyclostomata, 182 ; of Fishes, 182 



Skull, composition of, 206 ; development, 

 206 ; fScyllim'n caiiicula, 207, 208 ; 

 Salmo salar, 211, 212, 213, 214 ; 

 Cyclostomata, 216 f. ; PetroinyzoH' 

 marinus, 216 f., 217 ; Bdellostoma, 

 220 f., 220, 221 ; Elasmobranchii, 222 f. ; 

 JVotidanus cinereus, 222 ; Chimaera 

 monstrosa, 223 ; Chondrostei, 224 f. ; 

 Sturgeon, 224 ; Polyodon, 225 ; Crosso- 

 pterygii, 226 f. ; Potypterus, 227 

 Holostei, 228 f. ; Teleostei, 229 f. 

 Dipnoi, 231 f. ; Protoptenis, 231 f., 232 

 Lepidosiren, 231 f., 233 



Sluiter, 38 



Smelt, 568, 411 



Smitt, 569 n., 714 n. 



Social Ascidians, 71 



Sole, 687 



Solea, 687, 685 ; ,?. vnlgaris, 686, 687 



Solenocytes, 29, 126, 127 



Solenognathus, 634 



Sohnmliynvhus, 634 



Solenostomidae, 633, 626, 627, 628 ; mar 



supial pouches, 416 

 t%lenosiomv.s, 633 

 Soleotalpa, 687 

 SoUas, I., 522 



Sollas W. J., 522 



Sdreusen, 355, 590 n. 



Sorithim, 588, 361 



Sosia, 588 



Sound-producing organs, 355 f. 



Spalt-papillen, 384 



Spaniodon, 563, 564 n. 



Sparidae, 664, 654, 303, 389 ; teeth, 251 



Sparisoina, 674 



Sparnodus, 665 



Sjjai'iis, 665 ; ,S'. unicolor, 665 



SpathiuTKS, 545 



Spaihodactyhts, 561 



Spengel, 5, 7, 8, 13 n., 16, 17, 18 u., 19 



&pe}igdia, 17, 5, 6 



Spermatozoa, 413 



Spb-aerodon, 665 



Sphenacantlms, 44^^ 



Sp/i^nocepthaliis, 656 



Sphyraena, 64^ 



Sphyraenidae, 64^, 637 



Sphyraenodus, 678 



Sphyrna, 449, 153 ; liver, 272 ; fossil, 

 450 ; distribution, 449 ; S. viallais, 

 266 ; spiral valve, 266, 267 ; S. tihurn, 

 450 ; S. tudes, 449 ; -S. zygaena, 450 



Sphyrnidae, 449 



Spinacanthvs, 723 



Spinachia, 630 ; S. vulgaris, 631 



Spinacidae, -^5^ ; photophores, 179 ; fossil, 

 456 



Spinal cord, 367 



Spinal nerves, 378 



Spinas, 455 



Spiniv&iiier, 603 



Spiny Dog-Fishes, 455 



Spiracle, 279, 288 



Spiracular pseudobranch, 279, 284 ; in 

 Teleostomi, 284 ; blood supply, 335 



Spiral valve, 264 f. 



Spix, 558 n. 



Spleen, 342 



Spoon-Bill, 491 ; = Polyodon, q.v. 



Sprat. 564 1 



Squaliobarbus, 582 



Squaloraia, 468 



Squaloraiidae, ^55 



Star-gazers, 1 55 



Starks, 627 n. 



Steatogenys, 579 



Steenstrup, 36, 685 u. 



Stegophihis, 589 ; -S. insidiosus, 594 



Stegostoma, 44^ ; -S. tignimm, 446 



Steindadmervi, 647 



Steinegeria, 68-^ 



Stenodus, 565 



Stephanoberycidae, 619, 606 



atephanoberyx, 619 ; S. gillii, 620 ; & 

 vionae, 620 



Stereobalaims, 17, 5 ; .S'. canadensis, 16, 17 

 StereoUpis, 659, 660 

 Sterlet, 493 



