INDEX 



The names of Genera are printed in Italics. 



Aedominalia, 278 

 Acanthia, 364 

 Acauthiidae, 364 

 Acanthocystis, 18 

 Acanthodrilus, 145, 147, 



149 

 AcanthoTnetra, 21 

 Acarina, 419 

 Aoetabulifera, 210 

 Achaeta, 159 

 Acherontia, 354 

 Acineta, 32, 33 

 Acinetaria, 32 

 Aooela, 88, 89, 93 

 Acoelomata, 36, 47 

 Acontia, 67 

 Acridiidae, 337 

 Acridium, 339, 342 

 Actinia, 64, 67, 68 

 Actiniaria, 68 

 Actinoplwys, 17, 18 

 Actinopoda, 251 

 Actinosphaeriwm, 18, 19 

 Actinozoa, 47, 61, 63, 



278 

 Aculeata, 380 

 Adamsia, 67 

 Adradii, 61 

 Aegir, 64 

 Aeolosoma, 144, 150 



Agelena, 412, 416 

 Agelenidae, 416 

 Agrion, 347 

 Agrotidae, 353 

 Ahrostoma, 122 

 Alcippe, 278 

 Aloyionidae, 73 

 Alcyonaria, 64, 71 

 Alcyonidiwm, 185 

 Alcyorviwm, 73 

 Alloiocoela, 94 

 Alpheus, 290 

 Alphidius, 380 



Alternation of generations, 



47, 81, 102, 104, 168, 



364, 448 

 Alucita, 351 

 Alula, 370 

 Amawobius, 413 

 Ambulacra, 225, 241, 246 

 Ammonitidae, 222 

 Amoeba, 5, 9, 10 

 Amoebula, 8 

 Amphilina, 104, 105 

 Ampbipoda, 290 

 Amphiptyches, 104 

 AmpMiira, 235 

 AmpuUaria, 288 

 Anal respiration, 268, 347 

 An^xus, 290 

 Andricus, 379 

 Androctonus, 395, 398 

 Anguillulidae, 128 

 Animal kingdom, 2 

 Anisopleiira, 196 

 Anisopoda, 297 

 Annelids, 34 

 Andbothriwm, 105 

 Anodonta, 110, 190, 192, 



193 

 Anopla, 123 

 J^noplodium, 94 

 Antennary gland, 257, 



279, 280, 288 

 Antennata, 253 

 Anthomedusae, 56, 77 

 Antipatharia, 68 

 Antipathes, 68 

 Anura, 28, 333 

 Apatura, 355 

 Aphaniptera, 371 

 Aphididae, 365 

 Aphis, 366, 380 

 Aphomia, 352 

 Aphrodite, 156 

 Aphrophora, 365 

 Apiariae, 386 



29* 



Apis, 386 

 Aplysia, 206 

 Aplysoidea, 207 

 Apoda, 278 

 Aporosa, 68 

 Appendictdaria, 447 

 Aptera, 332 



Apus, 260, 261, 268, 391 

 Araneida, 408 

 Area, 192, 193 

 Arcella, 10, 11, 12 

 Archerina, 6 

 Archiaunelida, 138 

 Arohiooel, 78 

 Archigetes, 102, 1J)3, 105 

 Architeuthis, 223 

 Arcyria, 7 



Arenicola, 150, 153, 157 

 Argiope (a Brachiopod), 



170 

 Argiope (a Spider), 415 

 Argonauta, 221 

 Argidus, 264, 268 

 Argyroneta, 409, 411, 416 

 Arista, 370 



Aristotle's Lantern, 243 

 Artemia, 261 

 Arthropoda, 25, 34, 79, 



103, 253 

 Artbrostraoa, 282, 290 

 Ascaris, 124, 126, 129 

 Ascdla, 37 

 Ascidia, 442 

 Ascidiaoea, 450 

 Ascidians, 434 

 Ascones, 44 

 Ascothoracica, 278 

 Asellidae, 297 

 AseUus, 268, 293 

 Aspidiotus, 369 

 Aspidochirotae, 251 

 Aspidogaster, 108, 111 

 Astacidae, 286 

 Asfacus, 260 



