INDEX 



Abdomtxalia, 260. 

 Abiognesis, 08. 

 Abiological sciences, 9. 

 Acanthobdella, 139. 

 Acanthocephala, 553, 5TT. 

 Acanthoteuthis, 465. 

 Acarina, 329. 

 Achetidae, 378. 

 Achtheres, 241. 

 Acineta mystacina, 94. 

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

 Acrididae, 378. 

 Actinia. 53, 140, 141, 154. 



holsatica, 139. 



Actinidae, 140, 141, 145. 



Actinophrys. 83, 86, 93. 



Actinosphaerium Eichhornii, 83, 85. 



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



Actinula, 132. 



^Eginidae, 136. 



^Ethaliuin septicum, 18. 



/Etiology, 16. 37. 



Agamogenesis, 31, 34, 383 



Aglaophenia (Plumularidae). 120. 



Air-breathing Arthropoda, 320. 



Alaurina, 157. 



Albertia. 170. 



Alcippe lampas, 261. 



Alcyonium, 143. 



Alectoromorphse, 69. 



A)?ae, 14, 20. 82. 97. 



Alimentary apparatus, 56. 



Allantois, 67. 



Alternation of generations, 86, 67. 



Ambulacral vessels, 54. 



Ametabola, 361. 



Ammonitidae, 459. 



Ammothea pycnogonoides, 832. 



Amnion, 67. 



Amoeba radiosa, 86. 



sphaerococcus. 86. 



Amcebse, 13, S6, 103. 

 Amouroucium proliferum, 526. 

 Amphibia, 58, 59, 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. 



seandens, 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. 

 Antipathidae, 145, 146. 

 Aphis, 86, 37, 3S0-384. 



pelargonii. 364. 



Aphroditidae, 210. 



Apoda, 26a 



Aporosa, 146, 147, 150, 153. 



Appendages, 20. 



Appendicularia, 58, 510-518, 576. 



flabellum, 511. 



Aprocta, 158. 



Aptychus, 459, 460. 



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



cancriformis, 248. 



glaeialis. 245. 



Arachnida, 59, 221, 224, 820, 578. 



Araneina, 326. 



Area, 417. 



Arcella, 86. 



Arctisca, 334. 



Argonauta argo, 461, 462. 



Argulus, 241. 



" Aristotle's lantern," 492. 



Arthrosrastra. 320. 



Arthropoda. 21, 32, 36. 52. 53, 57, 64, 66, 198, 



206, 219-225. 820, 573, 574, 580, 536. 

 Arthrozoic series, 580, 



