Anisoxya Topsent, 1898 accepted as Topsentia Berg, 1899 (original description)
Anisoxya glabra Topsent, 1898 accepted as Topsentia glabra (Topsent, 1898) (original description)
Cerbaris Topsent, 1898 (original description)
Cerbaris torquatus Topsent, 1898 (original description)
Cliona levispira Topsent, 1898 accepted as Spiroxya levispira (Topsent, 1898) (original description)
Heteroxya Topsent, 1898 (original description)
Heteroxya corticata Topsent, 1898 (original description)
Higginsia thielei Topsent, 1898 (original description)
Leptosia schmidti Topsent, 1898 accepted as Acanthancora schmidti (Topsent, 1898) (original description)
Monocrepidium Topsent, 1898 (original description)
Monocrepidium vermiculatum Topsent, 1898 (original description)
Petromica Topsent, 1898 (original description)
Petromica grimaldii Topsent, 1898 represented as Petromica (Petromica) grimaldii Topsent, 1898 (original description)
Polymastia capitata Vosmaer, 1885 accepted as Sphaerotylus capitatus (Vosmaer, 1885) (additional source)
Rhaphidorus Topsent, 1898 accepted as Spinularia Gray, 1867 (original description)
Rhaphidorus setosus Topsent, 1898 accepted as Spinularia spinularia (Bowerbank, 1866) (original description)
Sceptrintus Topsent, 1898 (original description)
Sceptrintus richardi Topsent, 1898 (original description)
Sollasella hystrix (Topsent, 1890) accepted as Pseudotrachya hystrix (Topsent, 1890) (source of synonymy)
Sphaerotylus Topsent, 1898 (original description)
Tylexocladus Topsent, 1898 (original description)
Tylexocladus joubini Topsent, 1898 (original description)
Yvesia alecto Topsent, 1898 accepted as Crellastrina alecto (Topsent, 1898) (original description)