Index. 



427 



Aurelia, 103, 105. 

 Auricles, 257. 

 Auricula, 281. 

 Australian region, 42. 

 Australian province, 44. 

 Autarachna, 371. 

 Autolytus, 221. 

 Autoplasts, 324. 

 Aves, 46. 

 Avicula, 257. 

 Avicularia, 225. 

 Aviculidae, 268, 312. 

 Axial skeleton, 19. 

 Axinella, 73. 

 Axis cylinder, 22. 

 Axohelia, 1 17. 

 Axophyllinae, 115. 



Bacillus, Q03. 

 Bacteria, 403. 

 Bacterium, 9. 

 Baddeley, 56. 

 Baer, V., caNnty of, 37. 

 Bailey, 69. 

 Balanidae, 345. 

 Balanidae, nerves of, 337. 

 Balanoglossus, 157. 

 Balantium, 279. 

 Balantidium, 71. 

 Balanus, 345. 

 Balatro, 198. 

 Baphia, 269. 

 Barbala, 269. 

 Barrier reefs, 118. 

 Basal plates, 130. 

 Basipodite, 330. 

 Basogenic budding, 113. 

 Basommatophores, 302. 

 Bastian, 9. 

 Bate, Spence, 354. 

 Bathybius, 49, 62. 

 Baudelot, 199. 

 Baur, 136. 

 Baxt, 24. 

 Bdella, 373. 

 Bdellidae, 373. 

 Bdellura, 161. 

 Beak of cuttlefish, 318. 

 Beale, 14. 

 Bees, 36, 383. 

 Beeswax, 8. 

 Bela, 308. 

 Belemnites, 314. 

 Belonella, 119. 



Belosepia, 314. 



Bembex, 420. 



Beneden, Van, E., 90. 



Beneden, Van, P. J., 5, 34, 158, 164, 



168, 175, 225, 228. 

 Beroe, 107, 108. 

 Beroidse, 108. 

 Bhawania, 220. 

 Biesiadecki, 3. 

 Bifora, 268. 

 Bile, 30. 

 Bilharzia, 176. 

 Bimeria, 92. 

 Bimeridse, 92. 

 Binnenblase, 60. 

 Biogenesis, 9. 

 Bioplasm, 2. 

 Bipalium, 155, 160. 

 Bipinnaria, 136. 

 Bird's bones, 19. 

 Birguslatro, 356. 

 Bithynia, 291. 

 Bivalves, 243. 

 Bivium, 147. 

 Bizzozero, 19. 

 Blabera, 403. 

 Bladder, 14, 20. 

 Blainville, 193, 247, 255, 279. 

 Blaps, 415. 

 Blastocheme, 87, 93. 

 Blastocyst, 176. 

 Blastoderm, 37. 

 Blastoidese, 128. 

 Blastostyle, 87, 90. 

 Blattidag, 403. 

 Blatta, 103. 



Blind crustaceans, 356, 362. 

 Blood, 18, 33. 

 Boderia, 58. 

 Bodo, 55. 

 Boettcher, 5. 

 Bohadschia, 153. 

 Bojanus, 180, organ of, 262. 

 Bolina, 104, 107. 

 Bolinidse, 109. 

 Bolinopsis, 109. 

 Boltenia, 234. 

 Bombus, 179, 419. 

 Bombylius, 409. 

 Bombyliidse, 409. 

 Bombyciformes, 411 

 Bombycidae, 41 1. 

 Bombyx, 411. 

 Bone, 17. 



