Protospongiae.
Metaspongiae.
1C. Cnidaria (Stinging Animals).
Hydrozoa.
Polyps.
Medusae.
1D. Platodes (Flat-Worms).
Platodaria.
Turbellaria.
Trematoda.
Cestoda.
2. COELOMARIA OR BILATERALS. Animals with body-cavity and anus, and generally blood.
2A. Vermalia (Worm-Like).
Rotatoria.
Strongylaria.
Prosopygia.
Frontonia.
2B. Molluscs.
Cochlides.
Conchades.
Teuthodes.