NDEX 



Abdomen of crayfish, 36 



of grasshopper, 78 



of spider, 50 

 Ameba, 226 

 Amphibia, 132 

 Animal behavior, 12 

 Annulata, 248 

 Arachnida, 48 

 Aves, 174 



Bee, 90 

 Beetle, 98 

 Bird, 174 



air sacs of, 186 



brain of, 192 



ceca of, 190 



circulatory organs of, 186 



cloaca of, 190 



crop of, 188 



digestive organs of, 188 



ears of, 180 



endoskeleton of, 192 



excretory organs of, 192 



exoskeleton of, 180 



eyes of, 180 



feathers of, 182 



field study of, 174 



kidneys of, 192 



legs of, 196 



morphology of, 178 



muscles of, 184 



nervous system of, 192 



reproductive organs of, 192 

 18 



Bird, respiratory organs of, 190 



skeleton of, 192 



voice of, 176 



wings of, 196 

 Bumble bee, 90 

 Butterfly, 86 



Carapa("e of crayfish, 32 



of turtle, 158 

 Ceca of bird, 190 



of fish, 122 



of grasshopper, 70 



of starfish, 244 

 Cephalothorax of crayfish, 32 



of spider, 4S 

 Chordate, branch, 128 



class, 128 

 Cicada, 96 

 Clam, 260 

 Ctt'lenterata, 234 

 Condyles of bird, 194 



of frog, 146 

 Crayfish, 28 



abdomen of, 36 



antennae of, 32 



antcnnules of, 34 



aciuarium study of, 28 



arteries of, 38 



body divisions of, 32 



circulatory organs of, 36 



collecting of, 28 



development of, 30 



digestive organs of, 40 



27;i 



