2. Aularia tubularia, n. sp.

Tangential tubes of the network cylindrical, straight, of equal breadth, thorny, covered with numerous short bristle-shaped thorns, which are all of the same length and perpendicular to the tube.

Dimensions.—Diameter of the sphere 3.0; tubes 0.15 long, 0.005 broad.

Habitat.—South Pacific, Station 291, depth 2250 fathoms.

3. Aularia trigonaria, n. sp.

Tangential tubes of the network smooth, very thin in the middle part, gradually dilated towards both ends, so that the nodal points of the network are inflated. (Similar to Aulosphæra sceptrophora, Pl. [109], fig. 3, but without radial tubes.)

Dimensions.—Diameter of the sphere 2.2; tubes 0.1 long, 0.002 broad in the middle part, 0.01 on both sides.

Habitat.—North Pacific, Station 253, depth 3125 fathoms.

Genus 683. Aulosphæra,[[302]] Haeckel, 1860, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 802.

Definition.—Aulosphærida with triangular meshes in the network, the tangential tubes of which form a simple lattice-sphere. Radial tubes arise at its nodal points.