INDEX 



461 



Three-spined Fish, 379 



Three-spined Stickleback, 94; dis- 

 tribution, 265; secondary sexual 

 characters, 299; pugnacity of male, 

 303; breeding, 306 f. ; see also 

 Stickleback 



Thresher Shark, feeding, 126; sys- 

 tematic position, 374; see also Fox 

 Shark 



Thunder-fish, see Electric Cat-fish 



T/uinmis, 173; finlets, 69; see also 

 Tunny 



Thymalliis, see Grayling 



Thyroid, 173, 331 



Tiddler, see Stickleback 



Tiger Shark, teeth, 123; food, 125; 

 systematic position, 374 



Tilapia, 43 1 ; see also Cichlid 



Tile-fish, 242 f., 243 



Tinea, see Tench, Golden Tench 



Tinning, see Canning 



Titanichthys, 349 



Toad-fish, poisonous flesh, 144; 

 luminous organs, 152; sound- 

 production, 157; systematic posi- 

 tion, 379 



Tobacco-pipe Fish, see Flute-mouth 



Tongue, 103, 168, 193 



Tongue Sole, 101; median fins, 68; 

 sensory papillae, 93; lateral line, 

 100; mouth, 118; systematic posi- 

 tion, 379 



Tooth, see teeth 



Toothed Carp, 378; see also Cyprin- 

 odont 



Top Minnow, see Cyprinodont 



Tope, nictitating membrane, 186; 

 number of young, 325; systematic 

 position, 376 



Topography, of fins, 13 



Tornado, 431 



Torpedo, electric organ, 15, 145, 

 146; systematic position, 376 



Touch, 196 



Toxotes, see Archer-fish 



Trabecula, 161 



Trachinus, see Weever-fish; T. draco, 

 see Greater Weever 



Trachurus, see Horse Mackerel, Scad 



Trachypteridae, 378; see also Rib- 

 bon-fish 



Trachypterus, see Deal -fish 



Transparent Goby, length of life, 426 



Transplantation, 404 



Trawl, 390 f. 



Trawler, 387 f., 391 f. 



Trematoda, see Fluke 



Triacanthidae, 379 



Triassic period, 342 



Trichiuridae, see Cutlass-fish 



Trichiuroidea, 378 



Trichiurus, see Cutlass-fish, Hair-tail 



Trigeminal nerve, 180 



Trigger-fish, 95; dorsal fin, 68, 69; 

 pelvic fin, 81; scales, 97; teeth, 

 128, 137; sound-production, 155; 

 colours, 223; systematic position, 



379 

 Trigla, see Gurnard 

 Triglidae, 379 



Tristan d'Acunha, fishes, 259 

 Tritor, 127 

 Trivial name, 371 f. 

 Trochlear nerve, 180 

 Trophonemata, 325 

 Tropical Zone, 256 f. 

 Trout, 35; caudal fin, 74; compared 



with Salmon, 98; scales, 99; 



lateral line, 100; cannibal, 130; 



eye, 185; vision, 190; hearing, 



194 f. ; nocturnal activity, 204; 



colours, 217 f. 226; distribution, 



266 f. ; hybrids, 339; species, 366; 



systematic position, 377; as food, 



384; artificial propagation, 409; 



monstrosities, 419 

 Trout Perch, 278, 378 

 Truff, 370 

 Trumpet-fish, teeth, 115; systematic 



position, 378 

 Trumpeter, pectoral fin, 80 

 Truncated Sun-fish, larva, 333, 334 

 Trunk-fish, 11, 95; form of body, 



17; swimming, 24; respiration, 41 ; 



scales, 97; noises, 157; colours, 



208, 223; systematic position, 379 

 Trygon, see Sting Ray 

 Trygonidae, 376 

 Tube-mouth, 96, 1 1 5 

 Tubercles, 92 f. ; in Cyprinids, 292 f. 

 Tumours, 414 

 Tunny, 76; finlets, 69; caudal fin, 



74; scales, 91; flesh, 167; blood, 



1 73 ; colours, 210; migrations, 262 ; 



fishery, 262; systematic position, 



379; canning, 399 



