INDEX 



Ambulacral system : starfish, 136; sea Cephalopoda, 113. 



urchin, 143. 



Amoeba : general form, 174 ; repro- 

 duction, 175 ; conjugation, 176. 



Amphipod, 42, 44. 



Annelida : Nereis, 55; earthworm, 61. 



Anodonta, 83. 



Arbacia, 139. 



Armadillidium, 40. 



Arthropoda, 1. 



Ascidiacea, 125. 



Asiphonate lamellibranch, 83. 



Asterias forbsii, 131. 



Asterias vulgaris, 131. 



Asteroidea, 131. 



Beetle : external parts, 5 ; mouth- 

 parts, 11. 



Bell animalcule, 168. 



Bougainvillea, 149. 



Brachyuran decapod, 36. 



Bryozoa, 79. 



Bugula : the zocecium, 79 ; polypide, 

 79 ; internal organs, 80 ; avicularia, 

 81 ; ocecia, 81. 



Calcarea, 161. 



Campanularia, 155. 



Campanularian hydromedusan : alter- 

 nation of generations, 155 ; hy- 

 droid stage, 155 ; medusoid stage, 

 158. 



Caprella, 44. 



Carchesium, 168. 



Caterpillar : external parts, 18 ; inter- 

 nal parts, 18. 



Centiped, 20. 



Cestoda, 74. 



Chaetopoda : Nereis, 55 ; earthworm, 

 61. 



Chilopod, 20. 



Ciliate infusorian : Paramecium, 164 ; 

 Vorticella, 168. 



Circulatory system : grasshopper, 16 ; 

 crayfish or lobster, 32 ; Nereis, 58 ; 

 earthworm, 64 ; Bugula, 81 ; mussel, 

 88; clam, 98; snail, 106; squid, 

 119; Molgula, 127; starfish, 138; 

 sea urchin, 144. 



Cladoceran phyllopod, 50. 



Clam, see Hard-shell clam. 



Cnidaria : Hydra, 145 ; tubularian 

 hydromedusan, 149; campanularian 

 hydromedusan, 155. 



Coleopterous insect, 5. 



Copepod : external anatomy, 47 ; in- 

 ternal anatomy, 48. 



Crab : external parts, 36 ; gills, 37 ; 

 internal parts, 38 ; zoea of, 45 ; 

 megalopa of, 45. 



Crayfish or lobster : external parts, 22 ; 

 appendages, 26 ; gills, 29 ; internal 

 organs, 30 ; circulatory system, 32 ; 

 reproductive system, 33; digestive 

 system, 33 ; excretory system, 34 ; 

 nervous system, 35 ; mysis stage of 

 lobster, 46. 



Crustacea : crayfish or lobster, 22 ; 

 crab, 36 ; sow-bug, 40 ; typical am- 

 phipod, 42 ; Caprella, 44 ; larval 

 decapods, 45 ; copepod, 47 ; Daph- 

 nia, 50 ; nauplius larva, 53, 



Cyclops, 47. 



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