742 
INDEX 
Gymnodraco, 706 
Gymnotidae, 479, 
389 
Gymnotus, 579, 581, 649 
organs, 365, 366 ; 
Gyrinochilus, 582 
Gyrodus, 498 
Gyrolepis, 487 
Gyroptychius, 479 
Gyrosteus, 489 
574, 163, 256, 302, 
n. ; electric 
G. electricus, 580 
Haddock, 649, 308, 361 
Haddon, 289 
Haemulon, G64 
Hag-Fishes, 421 
Hake, 649, 308 
Haldeman, 19 n. 
Halec, GO9 
Half-Beak, 154, 414 
Halibut, 687 
ee 720 
Halieutaea, 720 
Halilophus mirabilis, 21 
Halimochirurgus, 723 
Haloporphyrus, 648 
Halosaurichthys, 624 
Halosauridae, 623 ; photophores, 178 
Halosauropsis, 624; H. macrochir, 621 n., 
624 
Halosaurus, 624 
Hainmer-head Sharks, 449 
Hancock, 53, 591 n., 592 
Haplistia, 477 n. 
Haplochilus, G16 
Haplochiton, GOS 
Haplochitonidae, 608, 606 
Haplodactylidae, 664, 650, 654 
Haplodactylus, 664 
Haplomi, 604 f., 651, 306 
Haplonotus, 663 
Harmout, 590 
Harpagifer, 706 
Harpodon, ap hil H. 
squamosus, 613 
Harrimania, 17,5; H. kupfferi, 20 n. 
Harrimaniidae, 17 
Harriotta, 471, 154, 223; distribution, 
473; H. raleighana, 472 ; young, 473 
Hartmeyer, 38 
Hasselt, van, 36 
Hatching, of eggs, 417 
Hatschek, 113 ; grove of, 128 
Haus, of Appendicularians, 66 
Head, shape and relative size, 153 
Heart, of Tunicata, 49, 67; of Fishes, 
327, 328 
Heart- vesicle, of Hemichordata, 15 
Heincke, 565 n. 
Helgia, 582 
Heliastes, 672 
Helicophagus, 588 
Heller, 38 
nehereus, 613; H. 
Helodus, 445 
Helogenes, 5S9 
Helostoma, 669 
Hemerocoetes, FOG 
Hemibranch, 278 
Hemibranchii, 627, 629 
Hemichordata, 4 f., 3, 38; 
30 f. 
Hemichromis, 671 
Hemiexocoetus, 638 
Hemimyaria, 707 f., 95, 96 
Hemiodontinae, 576 
Hemiodus, 576 
Henvipimelodus, 588 
Hemirhamphus, 638 ; beak, 154 ; intro- 
mittent organ, 414 
Hemirhynchus, 680 
Hemisilurus, SSS 
Hemithyrsites, 679 
Hemitripterus, 698 
Hemprich and Ehrenberg, 558 n. 
Heniochus, 668 
Henoplosus, G66 
Hensel, 593 n. 
Hephthocara, 712, 718 
Heptanchus, 4433; branchial cletts, 277; 5 
Hi. cinereus, 443 ; ; skull, 222 
Heptapterus, 588 
Herdman, 38,108 n., 109 n. 
Hermaphrodite Fishes, 420 
Hermaphroditism, 420 
Hermosilla, 657 
Heros, 672 
Herring, 564, 889; coloration, 173; 
gonads, 403; eggs, 412; influence of 
temperature on time of hatching, 417 
Heterobranchus, 588, 590 ; accessory gill, 
293 
Heterochuerops, 673 
Heteroconger, GOL 
Heterodont, 251 
Heterodontidae, 444; teeth, 251; per- 
sistent nephrostomes, 401, 445 
affinities, 
Heterodontus, 444; skull, 228; teeth, 
251; spiral valve, 267; H. philippi, 
445 
Heteromi, 627 f., 306 
Heteropleuron, 137, 188; H. bassanum, 
137; H. cingalense, 187 ; H. cultellum, 
137 ; H. hectori, 187; H. maldivense, 
137 
Heterostichus, 7O9 
Heterostraci, 524 f., 149 
Heterothrissa, 563 
Heterotis, 557, 555; larval gills, 290, 418 ; 
size of eggs, 408; H. ehrenbergii, gill- 
helix, 294 ; H. niloticus, 556, 558 
Hexagrammidae, 696, 694 
Hexagrammus, 696 
Hexanchus, 4433 branchial clefts, 277 ; 
H. griseus, 443 
Hickson, 289, 690 n. 
