Allman, G. J. (1888). Report on the Hydroida dredged by H. M. S. Challenger during the years 1873-76. Part II.- The Tubularinae, Corymorphinae, Campanularinae, Sertularinae, and Thalamophora.
Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology. 23 (part 70): i-lxix, 1-90, pl. 1-39.