J. E. V.  Boas, Contributions to Pteropodernes, 1st ed., vol. 4. Spolia Atlantica-Vidensk, 1886, pp. 1-231.

J.  Meisenheimer, ?Die Pteropoden der deutschen Südpolar-Expedition 1901-1903?, Südpol.-Exp. 1901-1903, vol. 1, p. 153, 1906.