Clathrina septentrionalis sp. nov. is described from Langfjorden, northern Norway. The main diagnostic features of this new species are the massive and well-delimited corm us with prominent oscula, and a skeleton composed of triactines and tetractines with cylindrical actines and blunt end. ...
aurea sp. nov. and C. brasiliensis sp. nov. are therefore assigned to the southwest Atlantic counterparts of C. clathrus and C. cerebrum , respectively. It is concluded that, at least for the species studied, and probably for many other species in taxonomically difficult groups, the actual ...