Invertebrata — Mollusca. 



81 Protozoa 

 .1 Rhizopoda 

 •2 Foraminifera 

 •3 Heliosoa 

 •4 Radiolaria 

 .5 Infusoria 

 .6 Flagellata 

 .7 Ciliata 



Cap. XVI. 59.2 INVERTEBRATA. 



Cap. XVII. 59.31 Protozoa. 



31.75 Suctoria 

 .9 Sporozoa 

 .91 Gregarinidae 

 .92 Coccidia 

 .926 Haematozoa 

 .93 Sarcosporidia 

 .94 Myxosporidia 

 .95 Microsporidia 



Cap. XVIII. 59.33 Coelentorata. 



Cap. XIX. 59.34 Spongiae, Porifera. 



34 Spongiae, Porifera 

 .1 Myxospongiae 

 •2 Ceratospongiae 

 •3 Halicbondriae, Monactinellida 



34.4 Lithospongiae Tetractinellida 

 .5 Hyalospongiae, H exact inellida 

 .6 Calcispongiae 



Cap. XX. 59.35—38 Cnidaria. 



35 Cnidaria 



36 Actinozoa 



.1 Rugosa, Tetracorallia. 

 .2 Alcyonaria, Octocorallia 

 ,3 Zoantharia, Hexacorallia 

 •4 Antipatharia 

 •5 Actinaria 

 .6 Madreporaria 

 87 Hydrozoa 



87.1 Hydromedusae, Graptolitha 



.2 Siphonophora 



.3 Acalephae 



.4 Calycozoa 



.5 Rhizostomidae 



.6 Marsupialida 



.7 Discophora 

 38 Ctenophora 



Cap. XXI. 59.39 Echinoderma (incL Enteropneusta). 



