INDEX 



423 



Sternfeld, criticism of Gadow's views 



on colour of Elaps, 243 

 Stockard and Papanicolaou, defects 



induced by alcohol, 30 

 Strains, see Physiological races 

 Stresemann, change in population of 



Rhipidura, 215 

 — , colour phases of birds, 94 

 — , colour-polymorphism, 282 

 Stuart Baker, Cuckoo's eggs, 267 



, resemblance of eggs of Lobipluvia 



to red soil, 237 

 Stunting, of insular forms, 139 

 — , of Mollusca, 8 1 

 Sturany, stunting of insular forms, 



139 



Sturtevant, correlation of structure 

 and interspecific sterility in Droso- 

 phila, 155 



— , courtship of Drosophila, 1 49 



— , mutations in Drosophila, 1 73 



— , occurrence of mutants in nature, 

 223 



— , parallel evolution in mimicry, 257 



— , sexual selection, 292 



Subspecies, 63, 64, 66 



— , reasons for giving a name to, 76 



Sumner, analysis of continuous varia- 

 tion, 87 



— , coat-colour of Peromyscus on lava 

 field, 236 



— , coat-colour of Peromyscus on sand- 

 spit, 236-37 



— , correlated modifications in mice, 

 169 



— , experiments and observations on 

 Peromyscus, 39, 44 



— , hereditary stability of colour of 

 desert animals, 259 



— , hereditary stability of colour of 

 Peromyscus, 81 



— , hereditary stability of races, 70 



— , interracial characters of Peromyscus, 

 164, 166, 170 



— , interracial sterility in Peromyscus, 70 



— , local population of Peromyscus, 69 



— , size of sample in diagnosis of sub- 

 species, 1 12 



Survival value, 223 



Sus scrofa, excessive growth of teeth, 



33 6 



Swarth, independent variation of char- 

 acters, 166 



— , trends in Passerella, 76 



Swinnerton, on lineages, 65 



Swynnerton, attacks of birds on 

 Charaxes, 253 



— , choice of food by birds in captivity, 



2 53 

 — , intrageneric mimicry in Charaxes, 



256 



Swynnerton, leathery integument of 

 Lepidoptera with warning colours, 



245 

 Synagris, colour-variation, 93 



Syngameon, 71 



Syrphidae, evolution of resemblance 



to Hymenoptera, 257 



Tabulae biologicae, 5 



Tachygenesis, 328 



Temperature, correlated effects of, 

 168, 169 



— , differential effect on hosts and 

 parasites, 359 



— , effect on duration of life, 22 



- — , effect on mutation-rate, 29 



— , high, avoidance of, by desert 

 animals, 360 



— , in nests of social insects, 360 



— , regulation, 360 



Terebratula, correlation of characters 

 in, 163 



Testudo, lack of geographical races, 108 



Tetilla, specific characters, 289 



Tetraploids, in Drosophila, 24 



Tettigidae, see Grouse-locusts 



Theridion, polymorphism, 101 



Thomas and Wroughton, races of 

 squirrels, 1 14 



, rivers as barriers between 



species, 1 16 



, specific intergradation, 89 



Thompson, W. D'Arcy, analogy be- 

 tween animal structure and in- 

 organic processes, 272 



— , views on adaptation, 364 



Thompson, W. R., analogy between 

 structure of flies and inorganic 

 processes, 272 



— , effects of epidemics on chances of 

 survival of mutants, 320 



— , spread of Gypsy Moth, 322 



Thompson, W. R., and Parker, natural 

 death-rates of Pyrausta, 193 



Thompson and others, selective elimina- 

 tion in Vespa, 207-8 



Thomsen and Lemche, melanism in- 

 duced by lead and manganese, 30 



Thorpe, natural death-rates of Rhya- 

 cionia, 193-94 



— , larval memory, 303 



— , physiological races, 52, 74, 121 



— , physiological races in Hypono- 

 meuta, 75 



— , susceptibility of insects to fumiga- 

 tion, 120 



Thorson and Tuxen, lack of variation 



in Carychium, 108 

 Thrinax, differences in seasonal occur- 

 rence, 143 



