Habitat.—Cosmopolitan; Mediterranean, Atlantic, Indian, Pacific; surface and in various depths.
2. Aulographis bovicornis, n. sp. (Pl. [103], figs. 12-14).
Radial tubes cylindrical, slender, straight, of equal breadth. Terminal branches usually two (rarely three), smooth, without lateral teeth and terminal spathillæ, eight to ten times as long as the breadth of the tube, pointed, S-shaped, or curved like the horns of an ox.
Dimensions.—Length of the tubes 0.6 to 0.8, breadth 0.015 to 0.02; branches 0.1 to 0.2.
Habitat.—South Atlantic (east of Buenos Ayres), Stations 323 to 325, surface.
3. Aulographis taumorpha, n. sp. (Pl. [103], fig. 16).
Radial tubes cylindrical, slender, straight, gradually tapering towards the pointed proximal end. Terminal branches constantly two, opposite in a tangential, slightly concave or nearly straight line, ten to twelve times as long as the breadth of the tube, smooth, straight in the proximal part, recurved in the distal part.
Dimensions.—Length of the tubes 0.7 to 0.8, breadth 0.01 to 0.015; branches 0.1 to 0.15.
Habitat.—North Pacific, Station 231, depth 2250 fathoms.
4. Aulographis triglochin, n. sp. (Pl. [103], fig. 17).