This is a North Atlantic species, so Jenkin's record is unlikely to be accurate.
Van Soest, R.W.M.; De Voogd, N.J. (2018). Calcareous sponges of the Western Indian Ocean and Red Sea. Zootaxa. 4426 (1): 1-160.
Jenkin, C.F. (1908). The Marine Fauna of Zanzibar and British East Africa, from Collections made by Cyril Crossland M.A., in the Years 1901 & 1902, The Calcareous Sponges. Proceedings of the Zoological Society of London. 1908 : 434-456.