INDEX 



443 



Cynoglossidae, 379; see also Tongue 

 Sole 



Cynoglossus, see Tongue Sole 



Cyprinid, phar>'ngeals, 137; sounds, 

 154; Weberian mechanism, 193; 

 palatal organ, 196; blind forms, 

 232; distribution, 274; breeding, 

 291 f. ; secondary- sexual char- 

 acters, 299; hybrids, 339 



Cyprinidae, distribution, 274: sys- 

 tematic position, 377; see also 

 Cyprinid 



Cyprinodon, see Cvprinodont, Toothed 

 Carp 



Cyprinodont, anal fin, 72; pelvic 

 fins, 83; lateral line, 100; of hot 

 springs, 241; in brackish water, 

 275; intromittent organ, 296 f.; 

 breeding, 297 f. ; secondary sexual 

 characters, 298, 300; viviparous 

 forms, 327; size, 425 



Cyprinoidea, 377 



Cytoplasm, 317 



Dab, scales, 91, 92; mouth, 118; 

 sense of smell, 185; nocturnal 

 activity, 205; ambicoloration, 228 



Dactylopteridae, 379; see also Flying 

 Gurnard 



Dallia, see Black-fish 



Damsel-fish, locomotion, 27; associ- 

 ation with anemone, 246 



Danish Seine, 391, 393 



Dapedius, tail, 62 



Darkie Charlie, see Spinax 



Darter, breeding, 304 



Deal-fish, dorsal fin, 65; caudal fin, 

 74; mouth, 117; larva, 334, 335; 

 systematic position, 378 



Death, colour changes at, 222 



Deciduous scales, 91 



Deep-sea-fishes, see oceanic fishes 



Delicatessen, 399 



Delphinus, see Dolphin 



Demersal eggs, 321 f. 



Demersal fishes, 386 



Dentine, 86, 121 



Depletion of stocks, 403 f. 



Depressed body, 15 



Depressible teeth, 128 f. 



Dermal bones, 107, 161 



Dermal denticles, 85 f. 



Dermal sense-organs, 196 



Dermis, 84 



Desmoiselle, colour, 208 

 Development, 317 f. ; of fins, 55, 



328; of dermal denticles, 86; of 



brain, 177; of auditory organ, 



191 f. 

 Devil-fish, 31; leaping, 32; birth of 



young, 326; systematic position, 



376 

 Diamond Flounder, 93; tubercles, 



92 

 Diaphus, see Lantern-fish 

 Digestion, 170 

 Dinichthys, 349 

 Diodon, see Porcupine-fish 

 Diodontidae, 379 

 Diphycercal tail, 59 

 Diphyllobothrium, 4 1 g 

 Diplurus, tail, 62 ; systematic position, 



357 



Dipneusti, 356, 358; see also Lung- 

 fish 



Dipnoi, see Lung-fish 



Dipterus, 358, 359 



Discocephali, 379; see also Remora 



Discontinuous distribution, 261 



Diseases, 413 f. 



Distribution, 252 f. 



Dog-fish, 35; gills, 36; dermal den- 

 ticles, 85; antiquity, 353; sys- 

 tematic position, 374; as food, 

 384 f. ; see also Spotted Dog-fish, 

 Spiny Dog-fish 



Dog Salmon, 286 



Dolphin, 2; paddle, 3 



Dolphin's Louse, 245 



Domesticated fishes, 419 f. 



Doras, noises, 157; see also South 

 American Cat-fish 



Dorosoma, see Hickory Shad 



Dorsal aorta, 172 



Dorsal fin, 13; use in locomotion, 

 26 f. ; variation in form, 54, 

 63 f. ; structure, 57 f.; position, 



67 

 Double-headed fry, 420 

 Dragon-fish, 379 

 Dragonet, courtship, sexual diflfer- 



ences, 300, 302 

 Drepanaspis gemiindenensis, 345 

 Drifter, 388, 393 

 Drifting, 393 f. 

 Drinking, 41 f. 



