560 



INDEX 



Asplanchna priodonta, 337 

 Assiminea, 470 



Astacus homarus, temperature limited, 21 

 Asterias, 181, 203 

 A. rubens, 195 

 A. tenuispina, 190 

 Asiraea, 208, 214 

 Astrangia, 209 

 Astroides, 199, 209 

 Astropecten, 182, 187 

 A. hemprichii, 207 

 A. irregularis, 195 

 A . jonstonii, 283 

 A. spinulosus, 283 

 Atherina boyeri, 126 

 A. riqueti, 126 

 Atkins, 169, 175 9 

 Atlanta peroni, 238 

 Atlantic-Arctic, rivers of, 172 

 Atlantic copepods, distribution with tem- 

 perature, 24 

 Atmosphere, uniformity of, 377 

 Atolla, 262, 265, 278 

 Atolls, 211, 212 

 Atta, 431 



Attacus isabellae, 125 

 Attagenus, 48 

 Attycora cyanoleuca, 448 

 A<ya, 35 

 Atyella, 347 



Aucapitaine, experiments on dispersal, 69 

 Audouinia, 190 

 Auks, 483 



Aulacantha scolymantha, 235 

 Aulocleptes, 275 

 Aurelia, 181 

 A. aurita, 153, 166 



Auriculacea, accidental transport of, 70 

 Auricularia larvae, 230 

 Aurivillius, 163 61 . 222 M , 287 60 

 Australia, age of fauna, 112 



primitive forms, 112 

 Australian deserts, 48 

 Australian region, adaptive radiation, 78 

 Autumn overturn, 323 

 Avicennia, 197 



Axinus flexuosus, 192, 193, 194 

 Azores, endemism in, 89, 519 

 Azotobacter, 149 

 Aztcca, 431 



Babcock, 21 2 , 55 34 

 Bachmetjew, 22 24 

 Bacteria, in lakes, 340 



in the ocean, 148 

 Baikal, Lake, 86, 345 

 Balanoglossus, 182, 184, 196, 229 

 B. clamgerus, 185 

 B. kapfferi, 193 

 B alarms, 60, 202 

 B. balanoides, 158 

 B. biporcatus, Til 

 B. crenatus, 205 

 B. improvisus, 284 

 Baleen whales, 242 

 Balistes, 219 

 B. aculeatus, 218 



Baltic lakes, variation of Bosmina, 83 

 Baltic Sea, 283 

 isohalines, 285 

 salinity, 25, 164, 280 

 temperature variation, 155 

 Banta, 537 26 

 Banta and Brown, 358 76 

 Barbel region of rivers, 306 

 Barbour, 72 62 , 443 50 



on accidental dispersal, 69 

 Barbus, 84 

 B. fluviatilis, 306 



Barrett-Hamilton, 419 34 



Barrier reefs, 211, 212 



Barriers, 56 



for fresh-water animals, 60 

 for marine animals, 57 

 for terrestrial animals, 62 

 producing isolation, 73 



Barro Colorado Island, climatic graph, 17 



Basiliscus, 382, 472 



Bates, 400, 402, 419 68 . 83 - 86 , 442 42 



Bathyanalia, 348 



Bathynella, 115, 536 



B. natans, 94 



Bathyonus taenia, 258 



Bathyporeia,, 186 



Bathy pkrois, 260 



B. longicauda, 261, 262 



Bathyscia, 533 



Bats illustrating the Allen Rule, 389 



Batz, Island of, 204, 205 



Baumeister, 22 1 22 



Baur, 96 63 , 525 2 





