2. Aulodendron pacificum, n. sp. (Pl. [105], fig. 2).
Radial tubes cylindrical, slightly curved, in the proximal half smooth, in the distal half with scattered lateral branches, which are partly simple, partly forked, about twice as long as the breadth of the tube, and bear at the distal end a spathilla with five to six recurved teeth. The distal end of the tubes bears a spherical knob, which is separated by a deep stricture and armed with a bunch of six to twelve strong conical teeth.
Dimensions.—Length of the tubes 1 to 1.2, breadth 0.015 to 0.02; branches 0.03 to 0.04.
Habitat.—South Pacific, Station 293, depth 2025 fathoms.
3. Aulodendron australe, n. sp. (Pl. [105], fig. 3).
Radial tubes cylindrical, straight, thin, smooth in the proximal half, armed with numerous lateral branches in the distal half; the majority of the branches forked, about as long as the breadth of the tube, with two or three short ramules, each of which bears a spinulate terminal knob. The distal end of the tubes also forked, with two or three divergent branches.
Dimensions.—Length of the tubes 1.2 to 1.6, breadth 0.01 to 0.012.
Habitat.—South Pacific, Station 289; New Zealand, Station 169, surface.
4. Aulodendron atlanticum, n. sp.
Radial tubes cylindrical, tapering gradually towards the two ends; smooth and straight in the proximal half, irregularly curved and branched in the distal half, with ten to twenty (rarely more) branches, which arise almost perpendicularly from the tube. The proximal branches are from four to eight times as long as the greatest breadth of the tube, forked, with two or three short ramules; the distal branches are much smaller and simple. The distal end of each branch bears a spathilla with four to six short teeth.