INDEX. 



Abdominalta, 260. 

 Abiogaesis, 08. 

 Abiological sciences, 9. 

 Acanthobdella, 169. 

 Acanthocephala, 553, 577 

 Acanthoteuthis, 465. 

 Acai-ina, 329. 

 Achetidce, 378. 

 Achtheres, 241. 

 Acineta mystacina, 94. 

 Acinetae, 89. 93, 94, 99-101. 

 AcrididJE, 378. 

 Actini:i. 53, 140, 141, 154. 



holsatica, 139. 



Actinidje, 140, 141, 145. 



Actinopbrys, 83, 86, 93. 



Actinosphferiutn EichhomM, 83, 85. 



Actinozoa, 55, 110, 137, 146, U9, 150. 



Actinula, 132. 



M'xinuliB, 136. 



uEthaliuin septicutn, 13. 



.(Etiology, 16, 37. 



Agamogenesis, 31, 34, 383 



Aglaophenia (Pliimularidse). 120. 



Air-breathing Arthropoda, 320. 



Alaurina, 157. 



Albertia. 170. 



Alcippe lampas, 261. 



Alcyonium, 143. 



Alectoromorphflp, 69. 



Alga?. 14, 20, 32.97. 



Alimentary apparatus, 56. 



Allantols. 67. 



Alternation of generations, 36, 67. 



Ambulacral vessels, 54. 



Ametabola. 361. 



Ammonitidae, 459. 



Ammothea pycnogonoides, 332. 



Amnion, 67. 



Amoeba radiosa, 86. 



sphaerococcus, 86. 



AraoebiB, 13, 86, 103. 

 Amouroucium proliferum, 526. 

 Amphibia, 58, 50, 64, 70, 86. 

 Ampbidiscus, IDS. 



Amphidotus cordatus, 491. 

 Amphioxus, 57, 59. 

 Amphipoda, 313. 

 Amphithoe, 311. 

 Ampullaria, 60. 

 Anatomy, 1 6, 17. 

 Ancnter'ous invertebrates, 577. 

 Anguillula brevdspinus, 545. 



scandens, 550. 



Animals, characters, 44; morphology, 47; 



physiology, 54 ; natural orders, 6()2. 

 Anisonema, 90. 

 Annelida, 50, 51, 66, 164, 171, 193, 206, 207, 



212, 219, 416, 575, 580, 586. 

 Annuloid series, 580. 

 Annulose differentiation, 52. 

 Anodonta, 407. 408, 412, 416, 417. 

 Anomia. 411, 417. 

 Anomura. 293, 294. 

 Anthoi)hysa, 90. 

 Antinoplirys Eichhornii, 13. 

 Antipathidae, 145, 146. 

 Aphis, 36, 37, 3f 0-381. 



pelargonii. 864. 



Aphroditidae, 210. 



Apoiia, 260. 



Aporosa, 146, 147, 150, 153. 



Appendages, 20. 



Appendicularia, 53, 510-518, 576. 



flabellum, 511. 



Aprocta, 158. 



Aptvchus, 459, 460. 



Apus, 220, 223, 226. 242-245. 



cancriformis, 24Ji. 



glacialis. 245. 



Arachnida, 59, 221, 224, 320, 573. 



Araneina, 326. 



Area, 417. 



Arcella, 86. 



Arctisca, 334. 



Argonauta argo, 461, 462. 



Argulus. 241. 



" Aristotle's lantern," 492. 



Arthrogastra, 320. 



Arthropoda, 21, S2, 36. 52. 53, 57, 64, 66, 193^ 



206, 219-22.5, 320. 573, 574, 580, 586. 

 Arthrozoic series, 580, 



