2. Lithophyllium gladiatum, n. sp. (Pl. [130], fig. 3).

Spines compressed, sword-shaped, two-edged, crossed perpendicularly in the middle part by a broad, somewhat curved transverse beam; both lateral rods of the cross are triangular compressed, and have the same length as the proximal end. Apex simple. Base pyramidal, without leaf-cross.

Dimensions.—Length of the spines 0.2 to 0.25, breadth 0.01.

Habitat.—North Pacific, Station 241, surface.

3. Lithophyllium condylatum, n. sp.

Spines compressed quadrangular, tapering from the broader middle towards the two ends; from the middle part arise two opposite perpendicular apophyses, which bear on the rounded end a thickened condyle. Apex simple. Base pyramidal, with a small leaf-cross.

Dimensions.—Length of the spines 0.1 to 0.12, breadth in the middle part 0.02.

Habitat.—Central Pacific, Station 266 to 272, surface.

4. Lithophyllium foliosum, J. Müller.

Lithophyllium foliosum, J. Müller, 1858, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 52, Taf. xi. figs. 6-10.