Cytaeididae L. Agassiz, 1862 (redescription)
Cytaeis Eschscholtz, 1829 (redescription)
Cytaeis indica (Stechow, 1920) (new combination reference)
Cytaeis nassa (Millard, 1959) (new combination reference)
Cytaeis niotha (Pennycuik, 1959) (redescription)
Cytaeis nuda Rees, 1962 (original description)
Cytaeis uchidae Rees, 1962 (original description)
Perarella abyssicola (Haeckel, 1889) (status source)
Perarella affinis (Jäderholm, 1903) (status source)
Perarella clavata (Jäderholm, 1905) (redescription)
Stylactella spongicola Haeckel, 1889 accepted as Perarella spongicola (Haeckel, 1889) (status source)
Stylactella vermicola (Allman, 1888) (basis of record)
Stylactis vermicola Allman, 1888 accepted as Stylactella vermicola (Allman, 1888) (status source)

 Status

 for Stylactis vermicola Allman, 1888

This is an inadequately described species, it likely belongs to the Cytaeididae [details]

 Taxonomy

 for Stylactella Haeckel, 1889

Type species designation by Rees (1962) [details]