Norman, A.M. (1869). Last report on dredging among the Shetland Isles. Part 2. On the Crustacea, Tunicata, Polyzoa, Echinodermata, Actinozoa, Hydrozoa, and Porifera.
In: Report of the thirty-eighth meeting of the British Association for the Advancement of Science; held in Norwich in August 1868. London 1869. pp. 247–336, (Amphipoda, pp. 273–288) (Porifera, pp. 327-335).