The World Register of Marine Species lists the following:
Balanoglossus Contains the following species: •
Balanoglossus apertus (Spengel, 1893) •
Balanoglossus aurantiacus (Girard, 1853) •
Balanoglossus australiensis (Hill, 1894) •
Balanoglossus borealis (Willey, 1899) •
Balanoglossus capensis (Gilchrist, 1908) •
Balanoglossus carnosus Müller in Spengel, 1893 •
Balanoglossus clavigerus delle Chiaje, 1829 •
Balanoglossus gigas Müller in Spengel, 1893 •
Balanoglossus hydrocephalus van der Horst •
Balanoglossus misakiensis Kuwano, 1902 •
Balanoglossus natalensis (Gilchrist, 1908) •
Balanoglossus occidentalis Ritter, 1902 •
Balanoglossus proterogonius Belichov, 1928 •
Balanoglossus robinii author unknown •
Balanoglossus salmoneus Belichov, 1928 •
Balanoglossus stephensoni van der Horst, 1937 •
Balanoglossus studiosorum van der Horst
Glossobalanus Contains the following species: •
Glossobalanus alatus van der Horst •
Glossobalanus barnharti Cameron & Ostiguy, 2013 •
Glossobalanus berkeleyi (Willey, 1931) •
Glossobalanus crozieri van der Horst, 1924 •
Glossobalanus elongatus Spengel, 1904 •
Glossobalanus hartmanae Cameron & Ostiguy, 2013 •
Glossobalanus hedleyi (Hill, 1897) •
Glossobalanus indicus Rao, 1955 •
Glossobalanus marginatus Meek, 1922 •
Glossobalanus minutus Kowalevsky, 1866 •
Glossobalanus mortenseni van der Horst, 1932 •
Glossobalanus parvulus (Punnett, 1906) •
Glossobalanus ruficollis (Willey, 1899) •
Glossobalanus sarniensis (Koehler, 1886) •
Glossobalanus williami Cameron & Ostiguy, 2013
Ptychodera Contains the following species: •
Ptychodera bahamensis Spengel, 1893 •
Ptychodera ceylonica author unknown •
Ptychodera erythrea Spengel •
Ptychodera flava Eschscholtz, 1825 •
Ptychodera pelsarti Dakin, 1916 ==References==