13 
(c) slender spindles, with pointed ends, and less crowded tuberosities; 0.18X0.02 mm.; 
(d) rather remarkable pseudo-clubs, derived from type (#), but distinctly broadened out at one end; 
(e) more irregular spindles and flat rodlets with long prominences projecting irregularly; 
(/) small irregular bodies occasionally approaching stars, and including a few crosses. 
4. Clavularia ornata n. sp. (Plate XIV, Figs. 1 and 5 ; Plate XXI, Fig. 2). 
Stat. 45. 7° 24' S., ii8°i 5 / .2E. 794 M. Fine grey mud, with some Radiolaria and diatoms. 1 Ex. 
Stat. 122. FsS'.sN., i25°o / .5 E. 1264 — 1165 M. Stone. 1 Ex. 
Three specimens of a beautiful form which consist of a thin membrane spreading over 
a flexible tube and covering it almost entirely. The calyces are very prominent and rigid, and 
tend to occur in little groups. The whole appearance is somewhat silvery owing to the large 
superficial spindles. 
The length of the longest tube is 13.5 cm., with a diameter of about 1.5 mm. With 
the membrane included, the diameter of the specimen is 2 mm. The stiff cylindrical calyces, very 
slightly narrowing upwards, rise to a maximum height of 5 mm., and beyond this the retractile 
portion protrudes for about 3 mm. The wall of the calyx consists of spindles longitudinally 
disposed, with a tendency to show 8 double rows slightly chevronecl. The anthocodial armature 
is characteristic, consisting of a strong collar with about 7—9 horizontal rows of spindles, and 
above that eight triangular points formed from 3 — 4 pairs of chevroned spindles, marking the 
bases of the tentacles. On the dorsal surface of the infolded tentacles there is a dense covering 
of small spicules longitudinally arranged. 
The spicules include the following forms : 
(а) slightly twisted spindles, with minute rounded knobs, tending to occur in rows, giving a 
suggestion of longitudinal ridges, 0.15 X °-° 2 nim. to 1.2 X 0.09 mm.; 
( б ) much less numerous similar spindles with prominent warts, simply rounded, not compound : — 
up to 0.65 mm. in length and 0.1 mm. in breadth; 
(c) minute spindles from the tentacles: — 0.06 mm. in average length; 
(d) a few small crosses: — average distance between adjacent tips o. 1 mm. 
A small specimen from Station 122 has more spindles of the Atype and fewer ot 
the tf-type. 
This new species seems to be nearest Cl. armata Thomson (Resultats Campagnes Scien- 
tifiques Monaco, 1927, p. 8, 5 figs.), but differs in the following points: 
(1) the collar, though very pronounced, has not more than 9 rows of horizontal spindles, as 
against 17 in Cl. armata ; 
(2) the armature of the calyx-wall is not markedly chevroned as in Cl. armata ; 
(3) the spicules of the eight ‘points’ on the retractile portion of the polyp are very markedly 
in chevron, an arrangement only approximated to in Cl. armata ; 
(4) the characteristic spindles with very minute knobs are only hinted at in Cl. armata , where 
prominently warty spindles predominate; 
(5) the calyces of Cl. ornata may attain to a height of 5 mm., not including the retractile 
portions of the polyps; the calyces of Cl. armata are about 2 mm. in height. 
