Aim: The study was conducted to provide 
                              baseline data on faecal parasites in groups of 
                              captive and free- living Non Human Primates of 
                              Gujarat state. 
                              
                              
                              Materials and Methods: 
                              Eighty two faecal samples from hanuman langur (Presbytis 
                              entellus) and fifteen samples from rhesus macaque 
                              were analysed from June, 2010 to March, 2011 using 
                              sedimentation technique as described by Georgi. 
                              Identification of parasitic ova was carried out as 
                              described by Soulsby (1982) and Wallach and Boever 
                              (1983). 
                              
                              
                              Results: Out of these 28 (34.14%) 
                              in hanuman langur and 6 (40.00%) in rhesus 
                              macaque, were found positive for the presence of 
                              total of six parasite species viz. Strongyloides 
                              spp., Trichuris spp., Entaemoeba histolytica spp., 
                              Ascaris spp., Entamoeba coli, Spirometra spp. 
                              
                              
                              
                              Conclusion: Incidence of parasitic infection 
                              was 34.14% and 40.00% in Hanuman Langur and Resus 
                              macaque respectively. 
                              
                              
                              Keywords: Hanuman 
                              langur, Non Human Primates, Parasites, Presbytis 
                              entellus, Rhesus Macaque