574 



INDEX 



Hentschel, 247 48 



Herdman, 222 46 



Herfs, 55 5 ' 30 



Herklots, 319° 



Hermit crabs on islands, 524 



Herold, 55 31 



Heron-Allen and Earland, 286 31 



Herpobdella, 310, 330 



Herrick, 163 38 



Herring, appearance of, 242 



variability in coastal, 28 

 Hertwig, 22 16 , 163 42 

 Herubel, 221^ 



Hesse, 247 10 , 418 26 , 419 52 , 420 13S 

 Hesse, P., 134 26 , 556 23 

 Hestia, 422 

 Heterocentrotus, 200 

 Heterocephalus philippsi, 385 

 Heterochaeta papilligera, 273 

 Heterocope, 362 

 Heteromurus, 530 

 Heterotopous, denned, 142 

 Heuglin, 276, 468 32 

 Hexathele, 94 

 Heymons, 420 116 

 Hibernation, 407, 409 



impossible in the Arctic, 512 

 Hickson, 221 21 , 222 59 

 Hiesemann, 441 19 

 Hill, 17 



Hilzheimer, 526 



Hilzheimer and Heck, 71 26 , 419 35 ' 38 ' 55 , 

 420123, i33 ; 441^ 44229 



Himalayas, 99 



Hingston, 498, 500 



Hippa eremita, 104 



Hipparchia, 396 



Hippoglossinae, number of vertebrae, 159 



Hippopotamus, 519 



swimming to Zanzibar, 65 

 Hirsch, 376 35 

 Hirundo, 128 

 H. erythrogaster, 546, 547 

 H. rustica, 546 

 Historical zoogeography, 6, 9 

 Hjort, 286 11 , 489 21 

 Hoek, 269 23 

 Hofer, 357 8 - 34 

 Holacanthus, 218 

 H. tricolor, 219 



Holdhaus, 120 57 , 420 130 , 537 39 



Holopedium, 299 



H. gibberum, 290, 298, 337, 362, 367 



Holothurians, abyssal, 252, 265 



Homaloptera, 314 



Homalosoma, 113 



Honuirus, 53 



Homoenema, 278 



Homoiothermal animals, 52, 501 



Homoiothermy, 383 



Homology of faunae, 104 



Hone, 514 21 



Honeybee, introduction of, 552 



Howard, 27 



Howell, 420 146 



Huber, 420 135 



Hudson, 72 59 , 96 16 , 468 20 , 503 15 



Hufner, 357 12 



Humboldt, 418 16 , 430, 442 33 , 468 25 , 491, 



499 

 Humboldt current, 101, 244 

 Humidity, an ecological factor, 377 



an environmental factor, 13 



darkening with, 379 



in alpine zones, 493 



in caves, 535 

 Hummingbirds, illustrating the Borg- 



mann principle, 387 

 Humus water fauna, 367 

 Huntsman, 22 22 - 23 

 Hutton, 106, 119 23 



Hutton and Drummond, 22 30 , 419 46 , 526" 

 Hwang Ho, changes of course, 63 

 Hyaemoschus, 112, 423, 435 

 Hyalaea, 238 

 Hyalodiscus, 374 

 Hyas, 188, 200 

 Hydatina scuta, 352 

 Hydra, 36, 41, 84, 95, 297, 333 

 H. fusca, 364 



Hydrogen-ion concentration, 18 

 Hydrogen sulphide in stagnant seas, 174, 



280 

 Hydromantes, 531 

 H. fuscus, 528, 535 

 H ydrophasianus, 476 

 Hydrophiidae, 472 

 Hydrophilus, 299 

 Hydropsyche, 312 

 Hydrosaurus, 472 



