654 



INDEX. 



Anacanthini, 385. 

 AfiaUantoidea, 859. 

 Analogy, 17. 

 Antminiota, 359. 

 Ananchytidce, 150. 

 Anarthropoda, 185, 143, 

 Anas, 479. 

 Anatidce, 479. 

 ^najijwx, 307, 

 Anatinidce, 307. 

 ^TicAiiAemem, 613. 

 Ancyloceras, 333, 334, 335, 338. 

 Ancylus, 319. 

 AndriaSy 412, 418. 

 -4miropAores, 98. 



^Ti^ieiZiiito, 177, 179. 



AnguillulidcBj 179. 



Angxds, 435, 437, 438. 



Animals and Plants, differences between, 



8-12. 

 Anisonemay 76. 

 ulnneiida, 185; cliaracters of, ] 87-189; 



pseudohsemal system of, 188 ; orders of, 



189 ; distribution of, in time, 197, 198 ; 



phosphorescence of, 76 ; urticating cells 



of, 80. 

 Amiulata {see Annelida). 

 Annuloida, 16 ; characters and divisions 



of, 141, 142. 

 Annulosiif 16; characters -and divisions 



of, 185. 

 Anodo7i, 306. 

 Anomodontia, 448. 

 Anomura, 230, 231. 

 Anoplotherium, 557, 613. 

 Anoplura, 258. 



Anoura, 407; characters of, 413; develop- 

 ment of, 415; families of, 416. 

 Anser, 479. 

 j47isermce,,479. 

 Ant-eaters, 511, 540, 541. 

 Antelopes, 561, 566, 615. 

 Antennje, of Lobster^ 206, 228 ; of Rhizo- 



cephala, 210; of Gvrripedes, 211, 212; 



of Cladocera, 218 ; of Xiphomra. 222 ; 



of Arachnida, 236; of Myriapoda, 



246; of Pava-opiiSt 217; of Jnsecta, 



254. 

 Antennules, of Lobster, 206 ; of LvimihiSf 



222. 

 Anthracotherium, 614. 

 Anthropoid Apes, 604. 

 Anthropoide8, 482. 

 Antkus, 499. 

 Antilopidce, 566. 

 Antipathxdce, 122. 129. 

 Antipathes, 122, 139. 

 Antlia, 265. 

 Anis, 261, 262; communities of, 269; 



slave-raaking Instincts of, 270 ; relations 



■with plant-lice, 270. 

 AntrostorrluSf 60O. 

 Apes, 604. 

 Aphcmapteryx, 492. 

 Aphaniptera, 264. 

 Aphides, 269 ; Ulleged parthenogenesis 



of, 32. 

 Aphrodite, 195, 197. 

 ApiocrimidcB, 157. 

 Apiocrinus, 163. 

 Aplacental Mammals, 522. 



Aplysia, 319. 



Aplysiadce, 314, 819. 



Apoda (Cirripedia), 215; {Amphibia), 



409 ; (Fishes), 884, 386. 

 Apodemata, 204. 

 Apolemiadce, 99. 

 ^i^orosa (Corals),l23, 139, 140. 

 Aporrhais, 317. 

 Appendieularia, 290, 291. 

 Aptenodytes, 476. 

 Aptera, 254, 257. 

 Apterygidce, 485, 4Pfi. 

 Apteryx, 484, 486, 487. 

 .^^Jiomifi, 507. 

 ^i?us, 219, 234. 

 Aquiferous system (see Water-voHciilar 



system). 

 Arachnactis, 117, 119. 

 Arachnida, 199, 200 ; characters of, 235 ; 



somite of, 235 ; organs of the mouth of, 



236; respiratory process of, 237; dis- 

 tribution in time, 244. 

 Araince, 494. 

 AraTieida, 241 ; characters of, 243 ; weba 



of, 243 ; reproductive process of, 244 ; 



distribution of, in time, 244. 

 Area, 306. 

 Arcadce, 305, 306. 

 Arcella, 52. 

 Arcellini, 52. 

 Archceocidaris, 150, 165. 

 Archceocyathus, 68. 

 ArchcBopteryx, 457, 472, 474, 504, 605,. 



607. 

 Archencephala, 522. 

 Archiulidoe, 247. 

 Arehiulus, 247. 

 Arctictis, 579. 

 Arctisca, 239. 

 Arctomys, 591. 

 Ardea, 482, 483. 

 Ardeidce, 482. 

 Arenicola, 196, 198. 

 Argonauta, 322, 325, 338; shell of, 327, 



328 ; reproductive process of, 325 ; hcc- 



tocotylus of, 325, 3-28. 

 ArgonautidcB, 328, 335. 

 Aristotle's Lantern, 148. 

 Armadillos, 510, 511, 521, 524, 539. 

 Arms, of Star-fislies, 150 ; of Ophiuroidea, 



153; of Crmoidea, 155; of ComatiUa, 



157; of Cystoidea, 159; .of Srachin- 



poda, 294 ; of Cuttle-fishes, 322 ; of 



Na/atilus, 330, 331. 

 Artemia, 219. 

 Arthrogastra, 242. 

 Arthropoda, 185 ; characters and divisions 



of, 199, 200. 

 Articulata, 199. 

 ArUodaetyla, 553, 555, 556. 

 Arvicola, 590. 

 AsaphiLS, 220. 

 Ascaris, 177, 179. 

 Ascidiadce, 291. 

 Ascidioida (see Tunicatd). 

 Ascidians, solitary, social, and compound, 



290, 291. 

 Ascoceras, 333. 

 AselluSy 226. 

 Asinus, 655. 



.-4stpAomrfa{iameZii6ra?icAia{a), 305, .H06. 

 AspergiUwin, 308. 



