TAXONOMY 



2G9 



Class I. Calcarea 



Order 1. Homocoela 

 Order 2. Heterocoela 



Class II, Hexactinellida 



PHYLUM II. PORIFERA 



Class III. Demospongiae 

 Order 1. Tetraxonida 

 Order 2. Monaxonida 

 Order 8. Keratosa 



Class I. Hydrozoa 



Order 1. Antbomedusse 

 Order 2. Leptomedusse 

 Order 3. Trachy medusae 

 Order 4. Narcomedusae 

 Order 5. Hydrocorallinae 

 Order 6. Sipbonophora 



Class II. Scyphozoa 



Order 1. Stauromedusae 

 Order 2. Peromedusae 

 Order 3. Cubomedusae 

 Order 4. Discomedusae 



PHYLUM in. CCELENTERATA 



Class III. Anthozoa 

 Subclass I. Alcyonaria 

 Order 1. Stolonifera 

 Order 2. Alcyonacea 

 Order 3. Gorgonacea 

 Order 4. Pennatulacea 

 Subclass II. Zoantharia 

 Order 1. Edwardsiidea 

 Order 2. Actiniaria 

  Order 3. Madreporaria 

 Order 4. Zoanthidea 

 Order 5. Antipatbidea 

 Order 6. Ceriantbidea 



PHYLUM IV. CTENOPHORA 

 PHYLUM V. PLATYHELMINTHES 



Class I. Turbellaria Class II. Trematoda 



Order 1. Rhabdoccelida Order 1. Monogenea 



Order 2, Tricladida Order 2. Digenea 



Order 3. Polycladida Class III. Cestoda 



Class I. Asteroidea 

 Class II. Ophiuroidea 

 Class ni. Echinoidea 



PHYLUM VI. NEMATHELMINTHES 

 PHYLUM VU. ECHINODERMATA 



Class IV. Holothurioidea 

 Class V. Crinoidea 



Class I. Archiannelida 



Class II. Chaetopoda 

 Subclass I. Polych^ta 

 Order 1. Pbanerocepbala 

 Order 2. Cryptocepbala 



PHYLUM Vm. ANNELIDA 



Subclass II. Oligoch/eta 

 Order 1. Microdrili 

 Order 2. Macrodrili 

 Class ni. Hirudinea 



Class I. Amphineura 



Order 1. Polyplacopbora 

 Order 2. Aplacopbora 



Class II. Gastropoda 



Subclass I. Streptoneura 

 Order 1. Aspidobrancbia 

 Order 2. Pectinibrancbia 

 Subclass II. Euthyneura 

 Order 1. Opistbobrancbia 

 Order 2. Pulmonata 



PHYLUM IX. MOLLUSC A 



Class ni. Scaphopoda 

 Class IV. Pelecypoda 



Order 1. Protobrancbia 

 Order 2. Filibrancbia 

 Order 3. EulameUibrancbia 

 Order 4. Septibrancbia 

 Class V. Cephalopoda 



Order 1. Tetrabrancbia 

 Order 2. Dibranchia 



