Page:Scientific results HMS Challenger vol 18 part 2.djvu/748

1624 7. Aulosphæra verticillata, n. sp.

Radial tubes slender, cylindro-conical, straight, tapering towards the distal end, about as long as the smooth, cylindrical, tangential tubes; armed with eight to twelve verticils of three curved, simple, lateral branches. (Very similar to the tubes of Aulastrum trichoceros, Pl. 111, fig. 5a.)

Dimensions.—Diameter of the sphere 1.6; tangential tubes 0.15 long, 0.008 broad.

Habitat.—South Pacific, Station 300, surface.

8. Aulosphæra spathillata, n. sp. (Pl. 109, figs. 7, 7a).

Radial tubes slender, cylindro-conical, straight, tapering towards the distal end, two to three times as long as the smooth, cylindrical, tangential tubes; armed with two or three distal alternate verticils, each of which forms a horizontal cross of four (sometimes three or five) equidistant branches; their distal ends are on the terminal cross simple hooks, on the proximal cross spathillæ.

Dimensions.—Diameter of the sphere 3.2; tangential tubes 0.12 to 0.16 long, 0.01 broad.

Habitat.—South-Eastern Pacific (off Valparaiso), Station 298, depth 2225 fathoms.

9. Aulosphæra cruciata, Haeckel (Pl. 109, fig. 10).

Aulosphæra elegantissima, R. Hertwig (non Haeckel), 1879, Organism. d. Radiol., p. 90, Taf. ix. fig. 1; Taf. x. figs. 2, 4, 5, 8, 14, 15.

? Aulosphæra pourtalesii, Duncan, 1881, Journ. Roy. Micr. Soc., p. 175, pl. iii. figs. 1-3.

Radial tubes slender, cylindro-conical, straight, tapering towards the distal end, twice as long as the smooth, cylindrical, tangential tubes; armed with four to eight cruciate equidistant verticils, each of which forms a regular cross of four equal, horizontal, lateral branches, bearing at the end a small knob or spathilla.

Dimensions.—Diameter of the sphere 1.2 to 1.8; tangential tubes 0.1 to 0.15 long, 0.003 broad.

Habitat.—Mediterranean (Messina), North Atlantic (Canary Islands), Caribbean Sea.

10. Aulosphæra elegantissima, Haeckel.

Aulosphæra elegantissima, Haeckel, 1862, Monogr. d. Radiol., p. 359, Taf. x. fig. 5; Taf. xi. figs. 5, 6.

Radial tubes cylindrical, straight, twice as long as the smooth, cylindrical, tangential tubes; armed with four to eight equidistant verticils, each of which is composed of eight to twelve simple, horizontal, lateral branches.

Dimensions.—Diameter of the sphere 1.5 to 2; tangential tubes 0.12 to 0.16 long, 0.004 broad.

Habitat.—Mediterranean (Messina), surface.

11. Aulosphæra bisternaria, n. sp. (Pl. 109, figs. 11, 12).

Radial tubes cylindrical, straight, about as long as the cylindrical tangential tubes, smooth or somewhat thorny, armed at the distal end with two alternate verticils of three branches, which bear