Habitat.—Antarctic Ocean, Station 154, surface.
2. Amphibrachium lanceolatum, n. sp.
Both arms equal, lanceolate, in the middle part three times as broad as at the two ends, two and a half times as long as broad, with eight to nine transverse septa, at the distal end blunt, without a terminal spine.
Dimensions.—Radius of each arm 0.3, greatest breadth 0.09.
Habitat.—Pacific, central area, Station 267, depth 2700 fathoms.
3. Amphibrachium dilatatum, n. sp. (Pl. [44], fig. 6).
Both arms equal, trapezoidal, somewhat broader than long, on the convex distal end three times as broad as on the narrow base, with five to six transverse septa, without a terminal spine. Central disk large, somewhat irregular, with three to four rings, twice as broad as the base of the arms.
Dimensions.—Radius of each arm 0.32, basal breadth 0.15, terminal breadth 0.44.
Habitat.—South Atlantic, off Patagonia, Station 319, surface.