• Haploscoloplos Monro, 1933 accepted as Leodamas Kinberg, 1866
• Haploscoloplos abranchiata Hartman, 1967 accepted as Leitoscoloplos abranchiatus (Hartman, 1967)
• Haploscoloplos alaskensis Hartman, 1948 accepted as Scoloplos (Scoloplos) armiger alaskensis (Hartman, 1948)
• Haploscoloplos bifurcatus Hartman, 1957 accepted as Leitoscoloplos bifurcatus (Hartman, 1957)
• Haploscoloplos bustoris accepted as Leitoscoloplos robustus (Verrill, 1873)
• Haploscoloplos cylindrifer (Ehlers, 1904) accepted as Scoloplos cylindrifer Ehlers, 1904
• Haploscoloplos elongata (Johnston, 1901) accepted as Leitoscoloplos pugettensis (Pettibone, 1957)
• Haploscoloplos elongatus (Johnson, 1901) accepted as Leitoscoloplos pugettensis (Pettibone, 1957)
• Haploscoloplos foliosus Hartman, 1951 accepted as Leitoscoloplos foliosus (Hartman, 1951)
• Haploscoloplos fragilis (Verrill, 1873) accepted as Leitoscoloplos fragilis (Verrill, 1873)
• Haploscoloplos fragilis intermedius Hartman, 1965 accepted as Scoloplos intermedius (Hartman, 1965)
• Haploscoloplos kerguelensis (McIntosh, 1885) accepted as Leitoscoloplos kerguelensis (McIntosh, 1885)
• Haploscoloplos kerguelensis chilensis Hartmann-Schröder, 1965 accepted as Leitoscoloplos chilensis (Hartmann-Schröder, 1965)
• Haploscoloplos kerguelensis minutus Hartman, 1953 accepted as Leitoscoloplos kerguelensis (McIntosh, 1885)
• Haploscoloplos mexicanus Fauchald, 1972 accepted as Leitoscoloplos mexicanus (Fauchald, 1972)
• Haploscoloplos minutus Hartman, 1953 accepted as Leitoscoloplos kerguelensis (McIntosh, 1885)
• Haploscoloplos panamensis Monro, 1933 accepted as Leitoscoloplos panamensis (Monro, 1933)
• Haploscoloplos robustus (Verrill, 1873) accepted as Leitoscoloplos robustus (Verrill, 1873)
• Haploscoloplos simplex Hutchings, 1974 accepted as Scoloplos simplex (Hutchings, 1974)
• Haploscoloplos tortugaensis Monro, 1933 accepted as Leitoscoloplos robustus (Verrill, 1873)