226 



INVERTEBRATE ZOOLOGY 



Daphnia : external parts, 56 ; internal 

 anatomy, 57; parthenogenesis of , 58. 



Decapod : macruran, 28 ; brachyu- 

 ran, 42 ; larvae of, 51. 



Dibranchiate cephalopod, 123. 



Digestive system : grasshopper, 15 ; 

 caterpillar, 21 ; spider, 27 ; crayfish 

 or lobster, 39; copepod, 54; Daphnia, 

 57; Nereis, 64 ; earthworm, 70 ; pla- 

 narian, 77; Bugula, 86; mussel, 96; 

 oyster, 101 ; clam, 109 ; snail, 117; 

 squid, 130 ; Molgula, 136 ; starfish, 

 145 ; sea urchin, 151. 



Diplopoda, 22. 



Dipterous insect, 7. 



Earthworm: external parts, 67; inter- 

 nal anatomy, 69; circulatory system, 

 70 ; digestive system, 71 ; reproduc- 

 tive system, 71; excretory organs, 

 73 ; nervous system, 74 ; a cross 

 section, 74. 



Echinodermata : starfish, 141 ; sea 

 urchin, 149 ; sea cucumber, 155. 



Echinoidea, 149. 



Ectoproct bryozoan, 85. 



Euglena, 192. 



Excretory system : grasshopper, 16 ; 

 crayfish or lobster, 40 ; copepod, 55 ; 

 Nereis, 65 ; earthworm, 73 ; plana- 

 rian, 78 ; tapeworm, 82 ; mussel, 

 95; clam, 109; snail, 116; squid, 

 129 ; Molgula, 138 ; Paramecium, 

 186 ; Vorticella, 189 ; Euglena, 193 ; 

 Amoeba, 195. 



Ely, 7. 



Free-swimming ciliate, 184. 



Freshwater mussel : shell, 89 ; mantle, 

 90 ; visceral mass, 90 ; mantle cavity, 

 91 ; respiratory system, 93 ; circula- 

 tory system, 94 ; excretory system, 

 95 ; digestive system, 96 ; reproduc- 

 tive system, 97; nervous system, 97. 



Freshwater polyp, 159. 

 Freshwater shrimp, 48. 



Gammarus, 48. 



Gastropod, 112. 



Gonionemus, 175. 



Grantia : general form, 181 ; repro- 

 duction, 183. 



Grasshopper: external parts, 9; mouth- 

 parts, 12 ; digestive system, 15 ; 

 excretory system, 16 ; reproductive 

 system, 16 ; respiratory system, 17 ; 

 circulatory system, 18 ; nervous 

 system, 18. 



Hard-shell clam : shell, 103 ; mantle, 

 104 ; visceral mass, 104 ; mantle 

 cavity, 105 ; respiratory system, 

 107; circulatory system, 108 ; excre- 

 tory system, 109 ; digestive system, 

 109 ; reproductive system, 110 ; 

 nervous system, 111. 



Helix pomatia, 112. 



Holothurian, 155. 



Hydra : general form, 159 ; reproduc- 

 tion, 161. 



Hydromedusan, 163, 169. 



Hydrozoa : Hydra, 159 ; tubularian 

 hydromedusan, 163 ; campanularian 

 hydromedusan, 169. 



Hymenopterous insect, 1. 



Infusoria : Paramecium, 184 ; Vorti- 

 cella, 188 ; Euglena, 192. 



Insect larva, 20. 



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

 hopper, 9 ; caterpillar, 20. 



Isopod, 46. 



Land snail : shell, 112 ; visceral mass, 

 113; mantle, 113; head, 114; mantle 

 cavity, 115 ; respiratory system, 

 116 ; circulatory system, 116 ; excre- 

 tory system, 116 ; digestive system, 



