INDEX. 



Acalles, 66 



Acanthopleura, 15, 145 



Acheta, 61, 63, 97, 117 



Acridiidse, 100, 106 



Actinia, 13 



Ageronia, 73 



Aglaura, 188 



Alciopida;, 14, 22, 137 



Ammophila, 243, 282 



Amphibia, 32, 129 



Ampliicora, 87 



Amphioxus, 129 



Angler, 186 



Anguis, 126 



Annelides, touch, 13 ; taste, 22 ; 



smell, 34; hearing, 87 ; sight, 134; 



problematical organs, 189 

 Anobium, 67 

 Anoxia, 251 

 Anthidium, 71 

 Anthrax, 251 

 Ants, 24, 31, 43, 56, 69, 107, 115, 



178, 202 

 Apion, 94 

 Apis, 26, 29, 58, 69, 70, 115, 150, 



172, 194, 258, 283 

 Area, 141 

 Arenicola, 87 



Arithmetic of animals, 281 

 Arthropods, touch, 16 ; taste, 23 ; 



smell, 35 ; hearing, 88 ; sight, 146 ; 



problematical organs, 188 

 Articulata. See Annelides, Insects 



Ascidians, 129 



Asellus, 48 



Astacus, 23, 51, 88 



Asteracanthion, 133 



Asterope, 22 



Astropecten, 132 



Ateuches, QQ 



Auditory hairs, 16, 79, 85, S8, 118 



organs, 77 



rods, 18, 104, 111 



B 



Balanus, 220 



Bee, hive. See Apis 



Bee, solitary, 242 



Beetles. See Coleopteia 



Bembex, 242, 246 



Birds, 129, 282 



Blatta, 46, 152 



Blethisa, 68 



Blind spot in eye, 125 



Bohemilla, 13, 134 



Bombardier beetle, 65 



Bombus, 28, 70, 73, 178, 283 



Bostrychida, 67 



Brachinus, 64, 68 



Brachyura, 90 



Butterfly. See Lepidopteia 



Calanella, 159 

 Ciilotis, 127 

 Callianassa, 50 



