The Northern Curlytail Lizard (Leiocephalus carinatus armouri) is a native species of the northern Bahamas. It is also an established exotic species in southern and central Florida. We report on a new population found in the harbor at Fort Pierce, St. Lucie County, Florida, USA. This population is isolated and extensive searches in the adjoining area failed to find this species elsewhere in the Fort Pierce area. The locality where this population is found also includes a dock where boats from the Bahamas deliver citrus to Florida. We propose this route for the establishment of this new population and discuss the proximity of shipping facilities to several other sites where this lizard has been reported.