Hemiphormosoma paucispinum Mortensen, 1934
Paraphormosoma alternans (de Meijere, 1902)
Phormosoma asterias A. Agassiz, 1881 accepted as Kamptosoma asterias (A. Agassiz, 1881)
Phormosoma bursarium A. Agassiz, 1881
Phormosoma hispidum A. Agassiz, 1898 accepted as Tromikosoma hispidum (A. Agassiz, 1898)
Phormosoma hoplacantha Thomson, 1877 accepted as Hygrosoma hoplacantha (Thomson, 1877)
Phormosoma indicum Döderlein, 1905 accepted as Phormosoma bursarium A. Agassiz, 1881
Phormosoma petersii A. Agassiz, 1880 accepted as Hygrosoma petersii (A. Agassiz, 1880)
Phormosoma placenta Thomson, 1872
Phormosoma placenta placenta Thomson, 1872
Phormosoma placenta sigsbei A. Agassiz, 1880
Phormosoma rigidum A. Agassiz, 1881
Phormosoma sigsbei A. Agassiz, 1880 accepted as Phormosoma placenta sigsbei A. Agassiz, 1880
Phormosoma tenue A. Agassiz, 1879 accepted as Tromikosoma tenue (A. Agassiz, 1879)
Phormosoma tenuis A. Agassiz, 1879 accepted as Tromikosoma tenue (A. Agassiz, 1879)
Phormosoma uranus Thomson, 1877 accepted as Tromikosoma uranus (Thomson, 1877)
Phormosoma verticillatum Mortensen, 1904
Phormosoma zealandiae Agassiz, 1904 accepted as Phormosoma rigidum A. Agassiz, 1881