Arch. Zool. Exp. (3) iii. 1895, p. 561, pl. xxiii.
F. E. Schulze, Challenger Monograph, xxi.
Chun, "Aus den Tiefen des Weltmeeres," 1900, p. 481.
Shipley, "Fauna of the Antarctic Regions." See also p. [216].
J. Coll. Japan, xv. 1901, pp. 128, 147, 190.