context source (Deepsea)Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online athttp://www.iobis.org/[details]
basis of recordvan der Land, J. (2001). Hirudinea, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 234-235 (look up in IMIS) [details]
additional sourceFuriness, Sharon; Williams, Julianne I.; Nagasawa, Kazuya; Burreson, Eugene M. (2007). A collection of fish leeches (Hirudinida: Piscicolidae) from Japan and surrounding waters, including redescriptions of three species. <em>Journal of Parasitology.</em> 93(4): 875-83., available online athttps://doi.org/10.1645/GE-979R1.1[details] Available for editors
additional sourceHayward, P.J. & J.S. Ryland (Eds.). (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. <em>Clarendon Press: Oxford, UK.</em> 627 pp. (look up in IMIS) [details] Available for editors