INDEX* 



Abra, 264 



Abra nitida, 192, 194 



Abraliopsis morisii, 257 



Abramis, 306 



A. brama, 305 



A. sapa, 60 



Absence of green plants in caves, 530 



Absence of light in caves, 530 



Absolon, 532, 537 4 ' 5 - «• »• "■ 14 ' 17 ' 29 



Abundance of species in the tropics, 24, 



401 

 Abyssal animals, faunal affinities, 264 



reviewed, 266 

 Abyssal benthos, 250 

 Abyssal life, common characters, 253 

 Abyssal pelagic community, 252 

 Abyssal stratum, in lakes, 331 

 Abyssal system, marine, 177 

 Acantharia, 266 

 Acanthephyra, 236 

 Acanthia, 508 

 Acanthodrilidae, 113 

 Achatina, 50 

 A. schweinfurthi, 400 

 Achatinella, species and subspecies, 77 

 Achatinellidae, 101 



endemism in Hawaii, 88 



geographic variation, 77 

 Acheta domestica, 547 

 Acinonyx, 449 

 Aeipenser ruthenus, 60 

 A. sturio, 60 



Acridids, tropical and temperate, 402 

 Acrocephalus palustris, 541 

 Acropora, 208 

 Actinia equina, 199 

 Active dispersal, 122 

 Actophilornis, 476 

 Adaptation to environment, 8 

 Adaptive radiation, 78 

 Adaptive selection, 29 

 Addax nasomaculatus, 414 



*Umlauts are indexed as though written oe and ue 



557 



Adelops, 530 



Adolf, 21 2 , 55 8 



Adriatic, effect of broken coast, 133 



Ad tidal zone, 179 



Aedes, 555 



Aegiceras, 197 



Aegosoma .scabricorne, 67 



Aelurophryne mammata, 501 



Aeolosoma quaternarium, 375 



Aeschna viridis, 329 



Aestivation, 407, 408 



emergence from, 456 

 Africa, connection with Europe, 111 

 Agama, 107 

 Agassiz, A., 104, 156, 162 23 , 173, 175 16 , 



222 68 ' M 247 7 ' 28 269 37 

 Age of genera, 107 

 Aggazzotti, 503 1 

 Aging of lakes, 349 

 Agkistrodon jriscivorous, 472 

 Aglantha, 236 

 Aglycyderes, 518 



Agriculture, effect on environment, 539 

 Agrotis, 540 

 Agrypnia pagetana, 329 

 Air bladder in fishes, 226 

 Air currents, 396 

 Air in floats, 226 

 Air temperature, in high mountains, 492 



in polar regions, 505 

 Akbesia davidis, 124 

 Alactaga, 414, 450 

 Alauda arvensis, 540 

 Alaurina, 230 

 Albinaria coerulea, 90 

 Albinism in insular birds, 521 

 Albanea, 183 

 A. symnista, 184 

 Alca, 483 

 A. torda, 79 

 Alee alces, 381 

 Alcedo, 130, 413 



