Nucula concentrica Say, 1824, [Basis of the current name] Range: 30.3°N to 2°S; 91°W to 46°W Depth: 0 to 90 m (live 9 m) Maximum Reported Size: 18 mm Distribution: USA: Florida: West Florida; Guyana, Surinam References: Lyons et al. (1971) Ll; Emerson & Jacobson (1976) dM; Cooley (1978) N Combining Genera: Leda