A description is presented of the shell and anatomic characters of the planorbid mollusk Plesiophysa guadeloupensis
("Fischer" Mazé, 1883), based on topotypic specimens from a pond in Borricaud (Grande Terre, Guadeloupe). Comparison with previous descriptions of nominal species of Plesiophysa
points to its identity with P. ornata
(Haas, 1938), of which it is a senior synonym.