INDEX OF SUBJECTS. 



583 



"Hairy" Moorhen, 55 



Halichirrus, vertebras, 123; molars, 242, 



243 



Haliotix, extra row of perforations, 287 ; 

 perforations occluded, 287; perfora- 

 tions confluent, 287 

 Holla, imperfect segmentation in, 156 

 Hallux, duplicity in Man, 349; Fowl, 

 390; variations in Kitthvake (Hiss a), 

 396; Erinaceus, 397; Herpestida?, 397, 

 normally absent in certain birds, 396 

 Hammaticherus hero*, double (?) an- 

 tenna, 551 

 Hand, digital variations in, 324 ; double, 



325, 331 

 progressive series of Conditions, 



324 



Hapalidffi, teeth, 203 

 Harpalus, nibripes, extra legs, 493; cul- 



ceatus, double (?) antenna, 550 

 Hawthorn, variation of, 569 

 Hectocotylus, supernumerary, in Ele- 



done, 473 



Hdictis orientalis, teeth, 233, 234 

 Helix kermovani, extra eye, 280 



hisjrida, union of tentacles, 461 

 Helodenna, vertebrae, 123 

 Helops cicruleus, extra antennae, 523 



sulityenniis, extra palpi, 524 

 Hemiaster; cases in which one ambula- 

 crum wanting, 445 ; two ambulacra 

 reduced, 443 ; duplicity of ambulacra, 

 446 

 Hcpialus humuli, males like females in 



Shetland, 254 



Heptanchus, seven gills, 174 

 Heredity, objection to use of term, 75; 



in digital variation, 398 

 Hermaphroditism, 67 ; in bees, 68 

 Hermodice carunculata, abnormal seg- 

 mentation, 158 

 HERPESTIJXE, hallux, 397 

 teeth, 227-231 



Herpettes galera, 229; gracilis, 227, 

 228, 229; griseim, 229; ichneu- 

 mon, 229, 230, 231 ; microcephaltis, 

 229; nipalensis, 227; nyitla, 228; 

 persicim, 227; puli-entlt-ntua, 228, 

 229; sinithii, 228, 229 

 Herring, supposed hybrid with Pilchard, 



275 



Heteroceplialus, a naked Eodent, 56 

 Heterogeneity, universal presence of in 



living things, 18 

 symmetrically distributed 

 around centres or axes, 

 19 

 Heterorhina nif/ntarsia, division of pro- 



notuiu, 455 



Hexanchus, six gills, 174 

 Hipparchia tithonus, eye-spots, 293, 294 

 Hippocampus compared with Phyllu- 



ptt'nj.r, 309 

 Hippoglo&sus ftinguis, 471 



Hippolyte fabricii, variation in epipo- 



dites of legs, 151 

 Hirudinea, variation in generative 



organs, 16-3 

 in colours, 304 



Hiriido mcdicinalis, variation in number 



of testes, 165, 166 



officinalis, supernumerary penis. 



166 



Hiister cadaverinus, extra legs, 512 

 Holopun ninr/i, 4-rayed specimen, 436 

 Holothurioidea, variation in number of 

 radii, 433 ; variations in numbers of 

 organs, 435 ; double monsters, 566 

 HomttruH, repetition of parts in cheliped, 

 530 ; in chela?, 531-538; colour varia- 

 tion, 44; hermaphrodite, 155 

 "Homodynamy," 133 

 Hornceosis, use of the term, 85 



between vertebrae, 106-127 ; 

 backward and forward, use 

 of terms, 111; forward in 

 vertebrae, 112; backward in 

 vertebrae, 111 ; in spinal 

 nerves, 144 ; of appendages 

 in Arthropoda, 146 ; in seg- 

 ments of Annelids with re- 

 spect to genital organs, 162, 

 163, 167, etc.; in teeth, 272; 

 in bilateral asymmetry, 465; 

 in parts of flowers, 111 

 Homology between members of Series 



of Repetitions, 30 

 individual, not attributed if 

 series is undifferentiated, 

 32 ; attempt to trace iu 

 mamma?, 191 ; discussed 

 in the case of teeth, 269; 

 in the case of digits, 351, 

 391, 371, 377; in the case 

 of joints of tarsus of Blutta, 

 418 ; in the case of radii of 

 Holothurioidea, 433 



Horns, Sheep, 285 ; Goat, 286 ; Roebuck, 

 286,460; Chamois, 286; of Koe- 

 buck united in middle line, 460 

 Horse, similarity of fore and hind legs, 



25, 26 



naked variety, 56 ; teeth, 244. 245 

 cervical fistulas, 180 

 simultaneous variation of mane 



and tail, 309 



extra digits, 360 ; by development 

 of digit n, 

 361367 

 by development 

 of digit iv, 367 

 by development 

 of digits ii 

 and iv, 368 

 by division of 

 digit in, 369 

 by intermediate 

 process, 371 



