Multi-volume work

Alder, J. & Hancock, A. 1845[-1910]. A Monograph of the British Nudibranchiate Mollusca: with figures of all the Species. Ray Society, London. ≡

Books

1. Alder, J. & Hancock, A., 1845(-1855). A Monograph of the British Nudibranchiate Mollusca: [i]-[xii], 1-54, Fam. 1 (pls. 1-27), Fam. 2 (pls. 1-5), Fam. 3 (pls. 1-44), suppl. pls. 45-48, pp. i-xlii.
2. Eliot, C., 1910. Part VIII (Supplementary): 198 pp., 8 pls..