INDEX. 



Figures in hold type indicate Illustrations. 



ABDOMINAL pores, 219 ; ribs, 240 

 Acinetaria, 18, 21, 53; Acineta, 23, 54 

 Actinopterygii, 228 

 Actinosphaerium, 20, 29-31 

 Actinozoa or Anthozoa, 18, 75, 85 

 Adaptation to environment, 231, 232 

 Afferent and Efferent branchial arteries? 



209, 210, 224 

 Air-sacs, 212, 241, 246 

 Akyonium, 18, 75, 85 

 Alimentary System of AmpHoxus, 186 

 Ascaris, 104 



Ascidia (Tunicate), 183 

 Balanoglossus, 179 



Cockroach (Blatta), 141 

 Craniata, 207 

 Crayfish (Astacus), 134 

 Dogfish (Scyllium), 220 

 t, Earthworm (Lumbricus) 



115 



Frog (Rana), 236 

 Leech (Hirudo), 124 

 Liver-fluke (Fasciola), 92 

 Lobworm (Arenicola) 



121 



Mosquito, 150 

 Mussel (Anodonta), 173 

 Nematoda (Round 



Worms), 102 

 Pigeon (Columba), 245 

 Rabbit (Lepus), 255 

 Skate (Raia), 220 

 Snail (Helix), 170 



iUantois, 208, 213, 214, 231, 249, 260 

 Alternation of generations, 13 



in Annelida, vChaetopoda), 114 



in Aurelia, 85 



in Ccccidiidae, 21 



in Coelenterata, 76 



in Distomum, syn. Fasciola, 94 



in Haemosporidia, 21, 66 



in Hydroids, 81 



Altemation in Malaria parasite'' 66 

 in Obelia, 82 

 in Polystomella, 33 

 in Spongilla, 74 

 in Strongyloides, syn. Rhabdon- 



ema, 112 

 in Syllidae, 122 

 in Tunicata, 181, 185 

 Ammocoetes larva, 217 

 Amnion, 214, 249, 259; false amnion 

 Gserous or sub-zonal membrane) 24{> 

 *w ; pro-amnion, 248 

 Amniota, 178, 239 

 Amoeba, 18, 20, 22, 26 

 Amoebocytes, 39, 70, 73, 113 116 

 Amphibia, 231; Classification of, 231; 



-bishes compared with, 231 

 Amphiblastula larva, 73, 74 

 Amphimixis, 13 

 Amphioxus, 185, 189, 193 

 Anabolism, 5 

 Analogous organs, 16 

 Anamnia, 178 



Ancylostoma, syn. Dochmius, 107 

 Annelida (Segmented Worms), 113- 



Classification of, 114 

 Anodonta (Freshwater Mussel), 168, 172 

 Anopheles (Mosquito), 61, 67, 143* 149 



152 ; larva, 147, 148 

 Anthomedusae, 83 

 Anthrax, Carrier of, 144 

 Anthropoid Apes (Simiidae), 265 

 Anthropoidea, 265, 273 

 Antilocapra (Prong-buck), 263, 270 

 Appendages of Arachnida, 156 

 Arthropoda, 126 

 Cockroach, 138 

 Crayfish, 131 

 Crustacea, 127 



Insects, 138 

 ., Limulus, 156 



Mites, 157 



