Contents: I. Study Area: Rajasthan. 1. Introduction. 2. Thar Desert or Great Indian Desert. 3. Aravalli hill ranges. 4. Geology. 5. River valley catchments. 6. Rainfall pattern. 7. Temperature regimes. 8. Forests. 9. Tropical thorn forests. 10. Tropical dry deciduous forests. 11. Central Indian Sub-tropical hill forests. 12. National parks and wildlife sanctuaries. References. II. Odonata (Damselflies and Dragonflies). 1. Introduction. 2. Habitat. 3. Life cycle. 4. Aquatic stage. 5. Terrestrial stage. 6. Historical resume. 7. Behavioral patterns. 8. Feeding behaviour. 9. Reproductive behaviour. 10. Emergence. 11. Life history study. 12. Species diversity. 13. Discussion. 14. Role as biological control agent. 15. Need for conservation. 16. Economic value of odonates. 17. Summary. Some frequently asked questions (FAQs). Damselflies and Dragonflies (Odonata) Associations and Societies globally. Odonata information websites. Glossary. Bibliography. Photoplates.