INDEX. 



Abdominalia, 260. 

 Abiognesis, 38. 

 Abiological sciences, 9. 

 Acanthobdella, 189. 

 Acanthocephala, 558, 577 

 Acanthoteuthis, 465. 

 Acarina, 329. 

 Achetida?, 378. 

 Achtheres, 241. 

 Acineta mystacina, 94. 

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

 Acrid idae, 378. 

 Actinia, 53, 140, 141, 154. 



holsatica, 139. 



Actinidae, 140, 141, 145. 



Actinophrys, 83, 86, 93. 



Actinosphieriura Eichhornii, 83, 85. 



Actinozoa, 55, 110, 137, 146, 149, 150. 



Actinula, 132. 



/Effinidae, 136. 



^thalium 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. 



Alectoromorphap, 69, 



Algfe, 14, 20. 32, 97. 



Alimentary apparatus, 56. 



Allantoic 67. 



Alternation of generations, 36, 67. 



Ambulaeral vessels, 54. 



Ametabola. 361. 



Ammonitidae, 459, 



Ammothea pycnogonoides, 332. 



Amnion, 67. 



Amoeba radiosa, 86. 



sphaerococcus, 86. 



Amoebae. 13, S6, 103. 

 Amouroucium proliferum, 526. 

 Amphibia, 58, 59, 64, 70, 86. 

 Amphidiscus, 108. 



Amphidotus cordatus, 491. 

 Amphioxus, 57, 59. 

 Amphipoda, 313. 

 Amphithoe, 311. 

 AmpuUaria, 60, 

 Anatomy, 1 6, 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, 580, 586. 

 Annuloid series, 580. 

 Aunulose differentiation, 52. 

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

 Anomia, 411, 417. 

 Anomura. 293, 294. 

 Anthoi)hysa, 90. 

 Antinophrys Eichhornii, 13. 

 Antipathidae, 14.5, 146. 

 Aphis, 36, 37, 3S0-884. 



pelargonii. 364. 



Aphroditidae, 210. 



Aporla, 260. 



Aporosa, 146, 147, 150, 153. 



Appendages, 20. 



Appendicularia. 53, 510-518, 576. 



flabellum, 511. 



Aprocta, 158. 



Aptychus, 459, 460. 



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



cancriformis, 243. 



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. 



Artbroeastra. 320. 



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



206. 219-225, 320. 573, 574, 580, 586. 

 Arthrozoic series, 580, 



