G. W.  Tryon, Manual of conchology, structural and systematic : with illustrations of the species, vol. 2(2). Philadelphia: , 1886, p. 265.

G. W.  Tryon, Manual of Conchology : structural and systematic, with illustrations of the species : second Series: Pulmonata, vol. 13. Philadelphia: , 1900, p. 254.

G. W.  Tryon, Manual of conchology, structural and systematic : with illustrations of the species, vol. 2(9). Philadelphia: , 1894, p. 366.

G. W.  Tryon, Manual of Conchology : structural and systematic, with illustrations of the species : second Series: Pulmonata, vol. 25. Philadelphia: , 1918, p. 433.

G. W.  Tryon, Manual of conchology, structural and systematic : with illustrations of the species. by George W. Tryon, Jr. Second series, Pulmonata, vol. 24. Philadelphia: , 1916, p. 380.

G. W.  Tryon, Manual of conchology, structural and systematic : with illustrations of the species. by George W. Tryon, Jr. Second series, Pulmonata, vol. 23. Philadelphia: , 1915, p. 380.