Contents: 1. Aravalli Range of Rajasthan: i. Introduction. ii. Aravali Ranges. iii. Geology. iv. River valley catchments. v. Rainfall pattern. vi. Temperature regimes. vii.Vegetation (Trees and Shrubs). viii. Forests. ix. National Parks and Wildlife Sanctuaries. References. 2. Odonata (Damsel and Dragonflies): i. Introduction. ii. Materials and Methods. iii. Results. iv. Discussion. References. 3. Lepidoptera (Butterflies and Moths): i. Introduction. ii. Materials and Methods. iii. Results. iv Discussion. Summary. References. Photoplates.