First issued in release COL21.6.
Last used in release COL23
Published in
Forbes, E., & Hanley, S. C. (1848). A history of British Mollusca and their shells. Vol. 1: i-lxxx [1853], 1-486 [1848], pl. A-W, AA-ZZ, AAA-ZZZ [dates uncertain]; Vol. 2: 1-480 [1 dec. 1849], 481-557 [1850]; Vol. 3: 1-320 [1850], 321-616 [1851]; Vol. 4: 1-300 [1852], pl. 1-114F [dates uncertain]. London, van Voorst. London, Van Voorst, 1:1–486. https://www.marinespecies.org/ascidiacea/aphia.php?p=sourcedetails&id=39588