Book

Alder, J. & Hancock, A. 1845(-1855). A Monograph of the British Nudibranchiate Mollusca: with figures of all the Species. Ray Society, London: [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. ≡

Parts

1. Alder, J. & Hancock, A., 1845. Part 1. - 1845, for 1844.
2. Alder, J. & Hancock, A., 1846. Part 2. - 1846, for 1845.
3. Alder, J. & Hancock, A., 1847. Part 3. - 1847, for 1846.
4. Alder, J. & Hancock, A., 1848. Part 4. - 1848.
5. Alder, J. & Hancock, A., 1851. Part 5. - 1851.
6. Alder, J. & Hancock, A., 1854. Part 6. - 1854, for 1852.
7. Alder, J. & Hancock, A., 1855. Part 7. - 1855.