INDEX. 



539 



Hemibranchii, 104, 106. 



Hemimanns, 71. 



Hemiphractidae, 71. 



Henke, 277, 283, 528. 



Henslow, G., 23, 226, 227, 228, 383, 384, 

 527. 



Herdman, 215. 



Heredity, 398. 



Hering, 492. 



Hertwig, 456, 457. 



Hesperornithidae, 124. 



Heteroglossa, 71. 



Heterologous series, 71. 



Heteromorphosis, 455. 



Heterosomata, 105, 106. 



Hilgard, S. W., 433- 



Hinnites, 267. 



Hippocampidae, 105. 



Hippopotamidae, 69. 



Hippopotamus, 330, 402. 



Hippotherium, 84, 149, 359 ; H. iedi- 

 terraneiim, 84. 



H6tfding,4g8. 



Holocephali, 99. 



Holoptychiidae, 91. 



Holostei, 101, 102. 



Holostomi, 106. 



Hominidae, 157. 



Homo, 155, 158, 169, 170. 



Homogeneous series, 71. 



Homogeny, 72. 



Homologous, series, 71. 



Homology, 19. 



Homo ncanderthalcnsis, 170 ; //. sa- 

 piens, 170; H. erectus, 169. 



Homoplassy in Mammalia, 72, 357. 



Homoplastic series, 71. 



Hoplobatrachus, 71. 



Horn, G. H., 25, 29. 



Horns, 314 ; of Cervus elaphus, 197. 



Horse, evolution of trotting, 426; H. 



phylogeny of, 146, 522. 

 House-fly, 254. 



Hunger, 504. 



Hurst, C. H., 205, 207. 



Hiiter, 251, 275. 276, 331. 



Huxley, 89, 99, 476. 



Hyaenidae, 145, 342, 343. 



Hyaenodon, 343. 



Hyatt, A., 8, 9, 10, 175, 182, 183, 201, 



202, 266, 268, 405, 420, 451, 520, 528, 



529, 530, 53i. 



Hybodus, 372. 



Hybopsis biguttatus, 22. 



Hydroids, 82. 



Hydrotropism, 501. 



Hyla, 11, 198, 199 ; H . carolinensis, 499; 

 H. gratiosa, 499. 



Hylella, 71, 198, 199. 



Hylidae, 65, 70, 198. 



Hylobates, 159. 



Hymen, 399. 



Hymenoptera, 82, 203. 



Hyopotamus, 312. 



Hyperolius, 71. 



Hypothesis of the origin of the divi- 

 sions of the Vertebrata, 362. 



Hypsiboas donmercii D. and B., 68; 

 H. punctatus Schu., 68. 



Hyracoidea, 132, 133, 141, 143. 332. 



Hyracotheriinae, 313. 



Hyracotherium, 147, 148, 302. 



Hystricidae, 351. 



Ibacus, 274. 



Ichthyocephali, 106. 



Ichthyopterygia, 113, 116, 121. 



Ichthyornithidae, 124. 



Ichthyosaurus, 121. 



Ichthyotomi, 100. 



Icichthys, 108. 



Icosteus, 108. 



Iguanidae, 73. 



Impact, 277, 284, 287, 291, 302, 305, 311, 



485- 



Impressed zone of the nautiloids, 405. 



Increase of size through use, 304. 



India, 159. 



Indo-Europeans, 153. 



Inexact parallelism, 200. 



Influence, of external stimulus on mo- 

 tions of animals, 496 ; of the mental 

 condition of the mother on the foe- 

 tus, 434, 451; of mind on coloration, 

 499; of mind on matter, 498. 



Infusoria, 79, 511. 



Inheritance, of acquired characters, 

 401, 405 ; of characters due to dis- 

 ease, 430; conditions of 438, 440, 

 of exercise of function, 426; of mu- 



