G. H. Fowler, Quart. Journ. Micr. Sci. xxix. 1888, p. 143.
For a general account of the Madreporarian skeleton, cf. Ogilvie, Phil. Trans. Roy. Soc. clxxxvii. B. 1896.
H. M. Bernard, Ann. Mag. Nat. Hist. (7) xiii. 1904, p. 1.
"Report on the Results of Dredging on the Macclesfield Bank," Admiralty Report, 1894.
C. Darwin, Coral Reefs, 3rd edition, 1889, p. 125.