208 



INDEX 



Daphnia : external parts, 50 ; internal 

 anatomy, 51; parthenogenesis of , 52. 



Decapod : macruran, 22 ; brachyu- 

 ran, 36 ; larvae of, 45. 



Dibranchiate cephalopod, 113. 



Digestive system: grasshopper, 13; 

 caterpillar, 19 ; crayfish or lobster, 

 33 ; copepod, 48 ; Daphnia, 51 ; Ne- 

 reis, 58 ; earthworm, 65 ; planarian, 

 71 ; Bugula, 80 ; mussel, 90 ; clam, 

 99; snail, 107; squid, 120; Molgula, 

 126 ; starfish, 135 ; sea urchin, 141. 



Diplopoda, 20. 



Earthworm : external parts, 61; inter- 

 nal anatomy, 63 ; circulatory system, 

 64 ; digestive system, 65 ; reproduc- 

 tive system, 65; excretory organs, 

 67 ; nervous system, 68 ; a cross 

 section, 68. 



Echinoderinata : starfish, 131 ; sea 

 urchin, 139. 



Echinoidea, 139. 



Ectoproct bryozoan, 79. 



Euglena, 172. 



Excretory system : grasshopper, 14 ; 

 crayfish or lobster, 34 ; copepod, 49 ; 

 Nereis, 59; earthworm, 67; plana- 

 rian, 72 ; tapeworm, 76 ; mussel, 

 89; clam, 99; snail, 106; squid, 

 119; Mogula, 128; Paramecium, 

 166; Vorticella, 169; Euglena, 173; 

 Amoeba, 175. 



Flagellate infusorian, 172. 

 Free-swimming ciliate, 164. 

 Freshwater mussel : shell, 83 ; mantle, 



84 ; visceral mass, 84 ; mantle cavity, 



85 ; respiratory system, 87 ; circula- 

 tory system, 88 ; excretory system, 

 89 ; digestive system, 90 ; reproduc- 

 tive system, 91 ; nervous system, 91. 



Freshwater polyp, 145. 

 Freshwater shrimp, 42. 



Gammarus, 42. 



Gastropod, 102. 



Grantia : general form, 161 ; repro- 

 duction, 161. 



Grasshopper : external parts, 7; mouth- 

 parts, 10 ; digestive system, 13 ; 

 excretory system, 14; reproductive 

 system, 14 ; respiratory system, 15 ; 

 circulatory system, 16 ; nervous 

 system, 16. 



Hard-shell clam : shell, 93 ; mantle, 

 94; visceral mass, 94 ; mantle cavity, 

 95 ; respiratory system, 97 ; circula- 

 tory system, 98 ; excretory system, 

 99 ; digestive system, 99 ; reproduc- 

 tive system, 100 ; nervous system, 

 101. 



Helix pomatia, 102. 



Hydra : general form, 145 ; reproduc- 

 tion, 147. 



Hydromedusan, 149, 155. 



Hydrozoa : Hydra, 145 ; tubularian 

 hydromedusan, 149 ; campanularian 

 hydromedusan, 155. 



Hymenopterous insect, 1. 



Infusoria : Paramecium, 164 ; Vorti- 

 cella, 168 ; Euglena, 172. 



Insecta : wasp, 1 ; beetle, 5 ; grass- 

 hopper, 7 ; caterpillar, 18. 



Insect larva, 18. 



Isopod, 40. 



Lamellibranchiata : freshwater mus- 

 sel, 83 ; hard-shell clam, 93. 



Land snail : shell, 102 ; visceral mass, 

 103 ; mantle, 103 ; head, 104 ; mantle 

 cavity, 105 ; respiratory system, 

 106 ; circulatory system, 106 ; excre- 

 tory system, 106 ; digestive system, 

 107; reproductive system, 110; nerv- 

 ous system, 111. 



Limax maxima, 102. 



