Contents: 1. INTRODUCTION TO INVERTEBRATES 2. KINGDOM PROTISTA 3. PHYLLUMPROTOZOA 4. PHYLUM PORIFERA 5. PHYLUM COELENTERATA (CNIDARIA) 6. HELMINTHES: PLATYHELMINTHES 7. PHYLUM ASCHELMINTHS (NEMATODES) 8. PHYLUM ANNELIDA 9. PHYLUM ARTHOPODA 10. PHYLUM MOLLUSCA 11. PHYLUM ECHINODERMATA