Ring kidney-shaped or nearly semicircular, with revolute vertical dorsal rod and strongly curved ventral rod; both rods with two pairs of spine-bunches. Apical horn nearly straight, thorny, longer than the ring, directed a little obliquely backwards. Feet slightly curved, of equal length, two to three times as long as the ring; each armed with few large bunches of curved spines, which are more developed in the caudal foot than in the two pectoral feet. _Dimensions._--Height of the ring 0.14, breadth 0.08; length of the feet 0.2 to 0.3. _Habitat._--Tropical Atlantic, Station 348, depth 2450 fathoms. 3. _Cortina conifera_, n. sp. Ring subcircular, smooth. Apical horn and the three divergent feet of equal size and similar form, cylindrical, straight, about as long as the ring, at the distal end thickened, with a dimply cone (similar to _Tripospyris conifera_ and _Tripospyris eucolpa_, Pl. 84, figs. 4, 7). _Dimensions._--Height of the ring 0.08, breadth 0.06; length of the feet 0.09. _Habitat._--Central Pacific, Station 268, depth 2900 fathoms. 4. _Cortina furcata_, n. sp. Ring elliptical, with three forked horizontal spines (one on the dorsal and two on the ventral rod). Apical horn and the three divergent feet of equal size, somewhat longer than the ring, slightly curved, in the distal half forked. _Dimensions._--Height of the ring 0.07, breadth 0.05; length of the feet 0.09. _Habitat._--South Atlantic, Station 332, depth 2200 fathoms. Fossil in Barbados. 5. _Cortina dendroides_, n. sp. Ring ovate, with six pairs of branched horizontal spines, three on the dorsal and three on the ventral rod. Apical horn very large, arborescent, about as long and as broad as the ring. Feet similar to the horn, also richly branched, of equal size. All the rods and their branches curved, with prominent distorted edges. _Dimensions._--Height of the ring 0.13 to 0.17, breadth 0.1 to 0.12; length of the feet 0.15 to 0.2. _Habitat._--Central Pacific, Stations 266 to 274, depth 2350 to 2925 fathoms. {952}6. _Cortina cervina_, n. sp. (Pl. 92, fig. 21). Ring ovate, with four pairs of forked horizontal spines (two dorsal and two ventral pairs). Apical horn straight and stout, as long as the ring, with trifid point. Three feet equal, widely divergent, very large, branched like a deer's antler, with very numerous short and stout, curved and pointed branches. All rods and branches roundish, without edges. _Dimensions._--Height of the ring 0.1, breadth 0.07; length of the feet 0.12 to 0.16. _Habitat._--Central Pacific, Station 265, depth 2900 fathoms. Genus 406. _Stephanium_,[25] n. gen. _Definition._--#Stephanida# with a simple dipleuric or bilateral ring, bearing at the base four divergent feet (two sagittal and two lateral feet).