Habitat.—North Pacific, Stations 244 to 245, depth 2775 to 2900 fathoms.
8. Aulospathis hexodon, n. sp.
Radial tubes without inflated terminal knob, with three forked, curved branches at the distal end, so that each tube usually bears six terminal branches; but other tubes of the same specimen bear only three simple or a few irregularly forked branches. Proximal whorl usually with six curved, irregular, lateral branches.
Dimensions.—Length of the tubes 2.0 to 3.0, breadth 0.03 to 0.06; branches 0.2 to 0.5.
Habitat.—Western Tropical Pacific, Station 224, depth 1850 fathoms.
9. Aulospathis furcata, n. sp.
Radial tubes without inflated terminal knob, with a variable number of unequal terminal branches, which are partly simple, partly irregularly forked or branched; the usual number of terminal branches is three or four, more rarely two or five or six. Proximal whorl very irregular, usually with four to six unequal, lateral branches.
Dimensions.—Length of the tubes 2.0 to 2.5, breadth 0.03 to 0.05; branches 0.1 to 0.3.
Habitat.—Stations 265 to 268, depth 2700 to 2900 fathoms.
10. Aulospathis variabilis, n. sp. (Pl. [104], figs. 14-17).