Aplidium californicum (Ritter & Forsyth, 1917) (basis of record)
Ascidia ceratodes (Huntsman, 1912) (basis of record)
Ascidia curvata (Traustedt, 1882) (basis of record)
Bostrichobranchus pilularis (Verrill, 1871) (additional source)
Botrylloides nigrum Herdman, 1886 accepted as Botrylloides niger Herdman, 1886 (additional source)
Botryllus planus (Van Name, 1902) (additional source)
Ciona intestinalis (Linnaeus, 1767) (additional source)
Clavelina oblonga Herdman, 1880 (additional source)
Corella eumyota Traustedt, 1882 (additional source)
Didemnum candidum Savigny, 1816 (additional source)
Distaplia bermudensis Van Name, 1902 (additional source)
Ecteinascidia turbinata Herdman, 1880 (additional source)
Eudistoma carolinense Van Name, 1945 (original description)
Lissoclinum fragile (Van Name, 1902) (basis of record)
Molgula citrina Alder & Hancock, 1848 (additional source)
Molgula robusta (Van Name, 1912) (basis of record)
Perophora viridis Verrill, 1871 (additional source)
Polyandrocarpa zorritensis (Van Name, 1931) (additional source)
Polyclinum constellatum Savigny, 1816 (additional source)
Pyura haustor (Stimpson, 1864) (basis of record)
Pyura vittata (Stimpson, 1852) (basis of record)
Symplegma viride Herdman, 1886 (additional source)
Trididemnum orbiculatum (Van Name, 1902) (basis of record)
Trididemnum solidum (Van Name, 1902) (basis of record)

United States part of the Gulf of Mexico for Botryllus schlosseri (Pallas, 1766)  (origin: alien)
United States part of the Gulf of Mexico for Styela plicata (Lesueur, 1823)  (origin: alien)
United States part of the North Atlantic Ocean for Bostrichobranchus pilularis (Verrill, 1871)  (origin: alien)
United States part of the North Atlantic Ocean for Styela plicata (Lesueur, 1823)  (origin: alien)