REPORT ON THE DEEP-SEA KERATOSA. 91 



Phylum II. Spokgij; (Porifera). 



Classes: 1 . Malthospongise ; 2. Silicispongia? ; 3. Calcispongise [or perhaps better, 

 1. Protospongiae (Tubulosse) ; 2. Metaspongise (Vesiculosa?)]. 



Phylum III. Cnidaria (Acalephse). 



IIIa. Subphylum 1. Hydrozoa. 

 Classes: 1. Hydropolypi ; 2. Hydromedusse (Craspedotce) ; 3. Siphonophorse. 



IIIb. Subphylum 2. Scyphozoa. 

 Classes: 4. Scyphopolypi ; 5. An thozoa (Corolla); 6. Scyphoniedusge (Acraspedaa). 



Phylum IV. Platoda (Plathelminthes). 

 Classes: 1. T-urbellaria ; 2. Trematoda; 3. Cestoda ; 4. Cteuophora (?). 



B. Second main branch of the Metazoa. 



Ccelomaria (Coelomata vel Bilateria). 



Phylum V. Helminthes (Vermes). 



Va. Subphylum 1. Archelminthes. 

 Classes : 1. Trochozoa ; 2. Eotatoria. 



Vb. Subphylum 2. Strongylaria. 

 Classes : 3. Nematoda ; 4. Acanthocephala ; 5. Chsetognathi. 



Vc. Subphylum 3. Khynchocxela. 

 Classes : 6. Nemertina ; 7. Enteropneusta. 



Vd. Subphylum 4. Prosopygia. 

 Classes : 8. Bryozoa ; 9. Phoronida ; 10. Brachiopoda. 



Phylum VI. Mollusca. 



VI a. Subphylum 1. Cochlides. 

 Classes : 1. Placophora ; 2. Gastropoda ; 3. Scaphopoda ; 4. Pteropoda. 



