INDEX 



4i3 



Harmer, spread of Cordylophora, 322 

 Hartnonia, polymorphism, 103, 282 

 Harnisch, correlation between male 



and female genitalia, 153 

 Harris, critique of Bumpus's observa- 

 tions on Passer, 209 

 Harrison, correlation, 1 70 

 — , experiments on Pieris napi, 37 

 — , experiments on Pontania, 41, 75 

 — , melanism induced by lead and 



manganese, 30, 214 

 — , selective elimination in Oporabia, 



— , viability of melanic Lepidoptera, 



214 

 Harrison and Carter, geographical 

 races in Aricia, 1 1 3 



, recombination in Aricia, 25 



Harrison and Garrett, melanism in- 

 duced by lead and manganese, 30, 

 214 

 Haupt, European Psammocharidae, 



276 

 Hauser, polymorphism in Damaster and 



Coptolabrus, 101 

 Haviland and Pitt, selection of colour- 

 forms of Cepea by birds, 201 

 Hawaiian Islands, endemism, 134-35 



, mimicry in wasps of, 259 



Headlee, optimum conditions for 



Bruchus, 358 

 Hebrides, insular mammals, 137 

 Hecht, size of Elysia determined by 



food-supply, 79 

 Hedge Sparrow, accepting Cuckoo's 



eggs, 267 

 Heikertinger, warning colours in Hy- 



menoptera, 254-55 

 Heincke, local races, 64 

 Helicidae, sporadic variation, 93 

 Helicigona, adaptive differences, 288 

 — , geographical races, 108 

 Heliconius, intrageneric mimicry, 256 

 — , nature of specific characters, 262 

 — , polymorphism, 102 

 Helops, powers of dispersal, 147 

 Hemidactylus, influence of diet on colour, 



79 

 Henry, human finger-prints, 61 



Heodes, change in population, 215 



— , racial intergradation, 89 



— , sporadic variation, 92 



Heredity, and correlation, 1 70 



— , as process by which stable form is 



reached and maintained, 362 

 Heron, lack of geographical races, 90, 



104 

 Hesperiids, species with similar geni- 

 talia, 154 

 Hesse, on fluctuations, 19 

 Heterogonic growth, 166, 337 



Hewitt, adaptive differences in Scor- 

 pions, 283-84 

 — , adaptive differences in Snakes, 285 

 — , phylogenetic trends in Scorpions, 



.78 

 Higgins, colour-convergence in Erebia, 



260 

 High and low males, in Scarabaeids, 12 

 Hingston, display of male birds dis- 

 regarded by females, 333 

 Hinton, absence of winter moult in 



Lemming, 241 

 — , geographical races in Dicrostonyx, 



io 7. 

 Hippodamia, variation maintained 



throughout season, 208 



Hippurites, Lang on adaptive value of 

 lower valve, 333, 335-36 



— , size of valves, 331, 335 



Hogben, appearance of direction in 

 evolution, 327 



— , spread of mutants, 13 



Holism, 346 



Holloway, physiological races of Tiphia, 

 120 



Homochromy, 233 



— , in noxious animals, 244 



Homonotinae, tarsal ' comb,' 277 



Homorus, elaborate nests, 342 



Honey bee, see Apis 



Hora, adaptations as a cause of 

 correlation, 169 



— , adaptation to life in torrents, 265 



Horme, 345 



Hornet, see Vespa crabro 



Horns in insects and mammals, 293 



Host-specificity, 74 



Howell, A. H., distribution of races of 

 marmots, 82 



Hubbs, influence of temperature on 

 structure of fish, 168 



Hudson, habits of Didelphys, 355 



— , nests of Woodhewers, 342 



Hughes, melanism induced by lead 

 and manganese, 30 



Humble bees, see Bombus 



Hutchinson, trends in Alicronecta, 78 



Huxley, effects of natural radiation, 30 



— , courtship of birds, 151 



— , heterogonic growth, 1 66 



— , heterogonic growth in relation to 

 orthogenesis, 337 



— , orthogenesis, 331, 337 



— , sexual selection, 292 



Huxley and Carr-Saunders, experi- 

 ments on Cavia, 36 



Hyatt, orthogenesis, 325 



Hybrids, sterility, 156-57 



Hydracarina, insular forms, 135 



Hymenoptera, climatic ' trends ' in- 

 ducing apparent mimicry, 258-59 



