Habitat.—Tropical Atlantic, Station 348, depth 2450 fathoms.
8. Acanthocorys macroceras, n. sp. (Pl. [97], fig. 12).
Cephalis large, hemispherical, spiny, with regular, circular pores, and a very large, cylindrical, vertical horn five times as long as the whole shell. Thorax spiny, campanulate, with irregular, roundish pores and nine strong, curved ribs, prolonged into nine slender, divergent feet twice the length, which are curved, convex in the proximal half and concave in the distal half.
Dimensions.—Cephalis 0.05 long, 0.08 broad; thorax 0.12 long, 0.2 broad.
Habitat.—South Pacific, Station 298, depth 2225 fathoms.
9. Acanthocorys furcata, n. sp.
Cephalis large, subspherical, spiny, with irregular, roundish pores. Thorax flatly conical, thorny, with irregular, polygonal pores, decreasing in size toward the mouth, and with nine straight divergent ribs, which at the peristome are forked and prolonged into eighteen slender, very long, bristle-shaped feet.
Dimensions.—Cephalis 0.045 diameter, thorax 0.07 long, 0.13 broad.
Habitat.—South Atlantic, Station 323, depth 1900 fathoms.