Reference

Charles Atwood Kofoid, Arthur S Campbell (1929): A conspectus of the marine and freshwater Ciliata belonging to the suborder Tintinnoinea, with descriptions of new species principally from the #Agassiz# expedition to the eastern tropical Pacific, 1904-1905 – Univ. Calif. Publs Zool. – 34: 1 - 403.