3. Auloceros capreolus, n. sp. (Pl. [102], fig. 8).
Radial tubes cylindrical, equally broad. Terminal branches in two opposite clustered bunches, each with sixteen to eighteen unequal secondary branches. The total length and breadth of each cluster is about four times as great as the tube is broad. No terminal spathillæ.
Dimensions.—Length of the tube 1.5 to 2.0, breadth 0.03; branches 0.07 to 0.1.
Habitat.—South Pacific, Station 295, depth 1500 fathoms.
4. Auloceros cervinus, n. sp. (Pl. [102], figs. 9, 10).
Radial tubes slender, spindle-shaped, slightly curved, tapering gradually from the middle towards the two ends. Terminal branches constantly three, obliquely ascending, each twice or three times forked (often more or less irregularly), with slender, curved, secondary and tertiary branches (twenty to twenty-four on each tube); the latter are scarcely half as broad as the three main branches of each tube. No terminal spathillæ.
Dimensions.—Length of the tubes 2.0 to 3.5, breadth 0.03 to 0.04; branches 0.12 to 0.15 long.
Habitat.—South Atlantic, Station 325, depth 2650 fathoms.
5. Auloceros elegans, n. sp. (Pl. [102], fig. 1).
Radial tubes slender, cylindrical, straight, equally broad. Terminal branches two or three, more or less irregularly branched, each with twelve to eighteen curved and pointed secondary branches. No terminal spathillæ. Differs from the preceding Auloceros cervinus in the cylindrical form of the thinner straight tubes, and the more irregular ramification; the branches are nearly tangentially expanded, The specimen figured, with expanded pseudopodia, red central capsule, and green phæodium, was observed living by me in 1882 in Ceylon.