7. Spongurus radians, n. sp.
Shell ellipsoidal, one and a half times as long as broad, with thorny surface, and eighty to one hundred and twenty (or more) thin, bristle-shaped, radial spines, somewhat longer than the shell. Spongy framework in the inner part very compact, in the outer part very loose, with a gradual transition between the two parts. Meshes in the central part not broader than the bars, in the superficial part ten to twenty times as broad.
Dimensions.—Length of the shell 0.24, breadth 0.16.
Habitat.—Mediterranean, Portofino, near Genoa, Haeckel, surface.
8. Spongurus spongechinus, n. sp.
Shell ellipsoidal, one and a third times as long as broad, with thorny surface, and thirty to forty thick, conical radial spines, about half as long as the shell. Spongy framework in the inner part of the shell compact, in the outer loose, with a gradual transition between the two parts. Meshes in the central part smaller than the bars, in the superficial part four to eight times as broad.
Dimensions.—Length of the shell 0.18, breadth 0.14.
Habitat.—North Atlantic, Station 353, surface.
Genus 146. Spongocore,[[185]] n. gen.
Definition.—Spongurida with ellipsoidal or cylindrical (sometimes three-jointed) shell of solid spongy framework, without internal cavity and without latticed medullary shell. Polar spines absent. An outer lattice-mantle is connected with the spongy shell by radial beams.