Habitat.—Mediterranean (Messina), surface.
9. Stauracantha bifurca, n. sp.
Spines stout, four-winged prismatic, with pyramidal apex and pyramidal base (without leaf-cross); in their middle with four compressed, little curved apophyses (convex on the outer, concave on the inner edge), which are simply forked at the end. Each apophysis with two short straight fork branches.
Dimensions.—Length of the spines 0.2, breadth 0.006; distance of the apophyses 0.08.
Habitat.—Central Pacific, Station 266, surface.
10. Stauracantha quadrifurca, n. sp. (Pl. [130], fig. 4).
Spines slender, four-sided prismatic, with simple apex and pyramidal base (without leaf-cross); with four slender apophyses, which are doubly forked about in their middle. Each apophysis with four short and thin terminal branches.
Dimensions.—Length of the spines 0.2, breadth 0.002; distance of the apophyses from the centre 0.08.
Habitat.—South Atlantic, Stations 325 to 330, surface.