Placostegus Philippi, 1844

(Omphalopoma) umbilicatus Mörch, 1863: Manila, Philippines. ZMUC ( Omphalopoma umbilicata fide Hartman 1959) ornatus Sowerby in Mörch, 1863: Philippines. ZMUC ornatus articulata Mörch, 1863: Philippines. ZMUC ornatus pennata Mörch, 1863: Philippines. ZMUC porosus macrostigma Mörch, 1863: Philippines. ZMUC