Dohrn, Mitth. Zool. Stat. Neapel, vi. 1886, p. 59; Shipley, Quart. Journ. Microsc. Sci. xxvii. 1887, p. 325.
R. Alcock, Journ. Anat. and Phys. xiii. (N.S.), 1899, p. 623.
Day, Fishes of Great Britain and Ireland, Lond. ii. 1880-84, p. 360.
Den Danske Ingolf-Expedition, ii. No. 2, Copenhagen, 1898.
Cunningham, Marketable Marine Fishes, London, 1896, p. 64.