v. 1826 Amphistegina lessonii d'Orbigny, 1826, p. 304, no. 3, pl. 17, figs. 1-4. Bock, 1971, p. 58, pl. 21, fig. 10.

This large biconvex species is probably a synonym of A. gibbosa (Rose and Lidz 1977).

It is commonly found in Bermuda outer reefs (high turbulence), forereefs, inner and outer shelves (5 to 60 meters depth). It is also reported in Florida-Bahamas outer reefs; in backreefs and reefs of Tobago Island, Jamaica, St. Lucia, Trinidad, Venezuela, Cuba, Belize Shelf (high turbulence area), and Panana; and in forereefs, inner and outer shelves (5 to 60 meters depth) of Trinidad and Panama, in lagoons of Puerto Rico, Barbuda.