INDEX. 



Abdominalia, 260. 

 Abiognesis, 88. 

 Abiological sciences, 9. 

 Acanthobdella, 1S9. 

 Acanthocephala, 553, 57T 

 Acanthoteuthis, 165. 

 Acarina, 329. 

 Achetidae, 378. 

 Achtheres, 241. 

 Acineta mystacina, 94. 

 Acineta?, 89. 93, 94, 99-101. 

 Aerididae, 378. 

 Actinia. 53, 140, 141, 154. 



holsatica, 139. 



Actinidae, 140, 141. 145. 



Actinophrys, 83, 86, 93. 



Aetinosphaerium Eichhornii, 83, 85. 



Actinozoa, 55, 110, 137, 146, 119, 150. 



Actinula, 132. 



^Eginidae, 136. 



^Ethalium septicum, 13. 



^Etiology, 16, 37 



Agamogenesis, 31, 34, 383. 



Aglaophenia (Plumularidae). 120. 



Air-breathing Arthropoda, 320. 



Alaurina, 157. 



Albertia. 170. 



Alcippe lampas, 261. 



Alcyonium, 143. 



Alectoromorpha?, 69. 



Alga?, 14, 20, 32, 97. 



Alimentary apparatus, 56. 



AllantoR 67. 



Alternation of generations, 36, 67. 



Ambulacral vessels, 54. 



Ametabola, 361. 



Amuionitidae. 459. 



Ammothea pycnogonoides, 332. 



Amnion, 67. 



Amceba radiosa. 86. 



sphaerococcus. 86. 



Amceba?, 13, S6, 103. 

 Amouroucium proliferum, 526. 

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

 Amphidiscus, 108. 



Amphidotus cordatus, 491. 

 Amphioxus, 57, 59. 

 Amphipoda, 313. 

 Amphithoe, 311. 

 Ampullaria, 60. 

 Anatomy, 16, 17. 

 Anenterous invertebrates, 577. 

 Anguillula brevispinus, 545. 



scandens, 550. 



Animals, characters, 44; morphology, 47; 



physiology, 54 ; natural orders, 562. 

 Anisonema, 90. 

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



212, 219, 416, 575, 5S0, 586. 

 Annuloid series, 5S0. 

 Annulose differentiation. 52. 

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

 Anomia, 411, 417. 

 Anomura. 293. 294. 

 Anthophysa, 90. 

 Antinophrys Eichhornii, 13. 

 Antipathida?, 145, 146. 

 Aphis. 36, 37, 3S0-384. 



pelargonii. 364. 



Aphroditidae, 210. 



Apoda, 260. 



Aporosa. 146, 147, 150, 153. 



Appendages, 20. 



Appendicular^, 53, 510-5 IS, 576. 



flabellum, 511. 



Aprocta, 158. 



Aptychus, 459, 460. 



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



cancriformis, 243. 



g-laeialR 245. 



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



Araneina, 326. 



Area. 417. 



Areella, S6. 



Arctisca, 334. 



Argonauta argo, 461, 462. 



Argulus. 241. 



"Aristotle's lantern," 492. 



Arthrosastra. 320. 



Arthropoda. 21, 32, 36. 52. 53. 57, 64. 66, 193, 



206. 219-225. 320. 573, 574, 580, 5S6. 

 Arthrozoic series, 5S0, 



