Montagu, G. 1808. Supplement to Testacea Britannica with Additional Plates. 183 pp. Available electronically.
Montagu, 1808. Suppl. Testacea Britannica: 22, 166, pl. 26, fig. 2.
Montagu, 1808. Suppl. Testacea Britannica: 42, pl. 29, fig. 7.
Montagu, 1808. Suppl. Testacea Britannica: ??.
Montagu, 1808. Suppl. Testacea Britannica: 56.