460 



INDEX 



Sturgeon, 94; fins, 57 f., 60; scutes, 

 scales, 88, 89, 94; mouth, 104, 

 108, 117; barbels, 104, 197; skull, 

 160; vertebrae, 164; spiral valve, 

 171; segmentation of egg, 323 f.; 

 larva, 332 ; ancestry, 356; roe, 399; 

 as royal fish, 399 f. 



Stvgicola, see Cuban Blind-fish 



Stylophorus, head, 116; mouth, 

 feeding, 118; vertebrae, 165, 166; 

 systematic position, 378 



Slylophthalmus, eye, 188; S. macren- 

 ' terouy 333; S. paradoxus, 187 



Sub-genus, 369 



Sub-kingdom, 369 



Sub-order, 369 



Sub-species, 367 



Succession of teeth, 122 f., 128 



Sucker, 70, 81 f.; of hill-stream 

 fishes, 237 



Sucker (Catostomidae), distribu- 

 tion, 278; systematic position, 377; 

 parasites, 418 



Sucking-fish, see Remora 



Suez Canal, 257 f. 



Summer sleep, see aestivation 



Sun-fish, 11, 76; form of body, 18; 

 skin, 18, 84; diving, 18; caudal 

 fin, 60, 74; teeth, 137; sound- 

 production, 155; spinal cord, 180 

 colours, 210; distribution, 269 

 parental care, 304 f. ; larva, 333 f. 

 systematic position, 378, 379 



Supramaxillary, 108 



Supra-neural, 164 



Supra-renal bodies, 173 



Surf-fish, young, 327 



Surgeon-fish, spine, 97; sound-pro- 

 duction, 155; systematic position, 



378 



Swim-bladder, see air-bladder 



Swimming, see locomotion 



Sword-fish, 12; speed, 29; feeding, 

 attacks on vessels, 113 f. ; verte- 

 brae, 165; blood, 173; young, 

 335 f-; systematic position, 379 



Sword-tailed Minnow, 301 



Symbiosis, 249 



Symbranchii, 380 



Symbranchoid, Eel, 19 



Synanceia, see Poison-fish 



Synanceidae, 379 



Synaptura, see Sole 



Synentognathi, 377 f. 

 Syngnathidae, 378; see also Pipe- 

 fish 

 Syngnathus, see Pipe-fish 

 Synodontis, reversed colours, 227 

 Synodontidae, 377 

 Synonym, 372 

 Sy sterna Naturae, 371 



Tactile filament, 198 



Tail, of Anaspids, 345 f. ; breathing 



with, 45; of hill-stream fishes, 240; 



see also caudal fin 

 Tail-rot, 414 

 Tail-spine, 85, 87 

 Tape Worm, 418 

 Tarpon, 31; leaping, 31, 66; dorsal 



fin, 66; scales, 89, 91 

 Taste, 195 f. 

 Taxonomy, 340 

 Teeth, 86, 120 f. 

 Telescopic eye, 187 f. 

 Temperature, of blood, 1 73 ; effects 



of, 240 f. ; on distribution, 255; on 



development, 329 f. 

 Ten-pounder, caudal fin, 60; skull, 



107; larva, 336; ancestry, 362; 



systematic position, 377 

 Ten-spined Stickleback, 299 

 Tenacity of life, 44 

 Tench, eflfects of heat and cold, 241 ; 



hibernation, 244; alleged heahng 



powers, 426 f. 

 Tertiary era, 269, 342 

 Testis, 173, 279 

 Tetragonurus, see Square-tail 

 Tetrodon, see Globe-fish, Puffer 

 Tetrodontidae, 379 

 Teuthidae, see Surgeon-fish 

 Teuthidoidea, 378 

 Thalassophryne, see Poison Toad-fish 

 Thames, as a Salmon river, 286 

 Thick-lipped Mojarra, 110 

 Third eye, 190 

 Thorn hook, 390 

 Thornback Ray, 17, 35, 295; 



bucklers, 85, 86; teeth, 127, 296; 



sexual differences, 295 f. 

 Thorn-headed Worm, 419 

 Thought, 206 

 Thread-fin, 76; pectoral fin, 79;. 



colours, 207 f. 

 Thread Worm, see Round Worm 



