Xll 



PHYSIOLOGICAL INDEX. 



b. Osseous skeleton, or Endo- skeleton : 



General view of the skeleton of Vertebrata 

 Osteology of Fishes 



Reptiles 



Birds 



Mammalia . 



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NUTRITIVE SYSTEM. 

 DIGESTIVE ORGANS OF ACRITA. 



Sponges ..... 



Fungiae ...... 



Alcyonium ..... 



Hydra viridis ..... 



Cortical Polyps .... 



Tubipora musica .... 



Sertularidae ..... 



Actinia ..... 



Polygastrica .... 



Acalephae ..... 



Hydatid 



Trichina ..... 



Taenia 



Distoma ..... 



Planaria ..... 



Diplozoon . . 



Echinorynchus .... 



DIGESTIVE ORGANS OF NEMATONEURA. 



Linguatula taenioides .... 

 Ascaris lumbricoides . . 



Bryozoa ..... 



Rotifera ..... 



EPIZOA. 



Adheres percarum .... 



Lamproglena pulchella 



ECHINODERMATA . 



Asterias . 



Echinus ..... 

 Holothuria ..... 



Siponculus ..... 



DIGESTIVE ORGANS OF HOMOGANGLIATA. 

 ANNELIDA. 



Leech 



Earthworm .... 



Dorsibranchiata ..... 

 Tubicola ... . 



MVRIAPODA. 



Julus ...... 



Scolopendra .... 



INSECTA. 



Mouths of Insects .... 



Alimentary canal of Insects 



of Arachnid a 



CRUSTACEA 



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