Botrylloides albicans Alder & Hancock, 1912 – synonym of Botrylloides leachi
Botrylloides parvulum Huitfeldt-Kaas, 1896 – synonym of Botrylloides leachi
Botrylloides pusilla Alder & Hancock, 1912 – synonym of Botrylloides leachi
Botrylloides radiata Alder & Hancock, 1912 – synonym of Botrylloides leachi
Botrylloides ramulosa Alder & Hancock, 1912 – synonym of Botrylloides leachi
Botrylloides rubrum Alder & Hancock, 1912 – synonym of Botrylloides leachi
Botrylloides sparsa Alder & Hancock, 1912 – synonym of Botrylloides leachi
Botrylloides vinosa Alder & Hancock, 1912 – synonym of Botrylloides leachi
Botryllus badium Alder & Hancock, 1912 – synonym of Botryllus schlosseri
Botryllus bivittatus Milne-Edwards, 1842 – synonym of Botryllus schlosseri
Botryllus calyculatus Alder & Hancock, 1912 – synonym of Botryllus schlosseri
Botryllus gemmeus Savigny, 1816 – synonym of Botryllus schlosseri
Botryllus leachi Savigny, 1816 – synonym of Botrylloides leachi
Botryllus miniatus Alder & Hancock, 1912 – synonym of Botryllus schlosseri
Botryllus minutus Savigny, 1816 – synonym of Botryllus schlosseri
Botryllus polycyclus Savigny, 1816 – synonym of Botryllus schlosseri
Botryllus smaragdus Milne-Edwards, 1842 – synonym of Botryllus schlosseri
Botryllus violaceus Milne-Edwards, 1842 – synonym of Botryllus schlosseri