Immature Emerald Basilisk stationary on a tree trunk in Tortuguero Park, Costa Rica - Feb 2005The image was taken using a flash, which I believe accounts for the brilliance of the green on the underside.
Cool fig. of a Draco taeniopterus in a @NHM_London recent addition to BHL from Guide to the Gallery of Reptilia (1885) biodiversitylibrary.org/page/35529572