On South American Hemidactylus (Sauria, Gekkonidae)

Three forms of Hemidactylus are known to occur on continental South America (Kluge, 1969j Hoogmoed, 1913): (i) H. mabouia (Moreau dc Jonnes, 1818), widespread; (ii) H. brookii leightoni Boulenger, 1911, in Colombia from the Caribbean coast to the Amazonian slopes of the Andes; (Hi) H. palaichthus Kluge, 1969, from the peninsula of Paria on the northivest, to coastal Surinam on the northeast, to the Brasil-Guyana border on the southeast, to the Duida region on the southwest.I hereby extend the distribution of palaichthus southwards on the Negro valley, describe H. agrius, sp.n., from the northeast of Brasil, discuss its origin and distribution and comment on the distribution and means of dispersal of H. mabouia.