to a height of 3 mm., and show a distinct division into a calycine and a retractile portion. The 
species thus belongs to Clavularia in the strict sense, not to Anthelia as Kukenthal suggested. 
The interlocked spicules of the calyx are characteristic capstans with a zone of prominent 
knobs near each end, and some of these forms approach double wheels. In the upper retractile 
region of the polyp there are delicate rodlets or spindles longitudinally disposed. 
Previously recorded from Ceylon and Zanzibar. 
2. Clavularia delicattUa n. sp. (Plate VII, Fig. 10; Plate XXIII, Fig. 4). 
Stat. 12. 7° 1 5' S., 11 5 0 15'.6 E. 289 M. Mud and broken shells. 1 Ex. 
This delicate white specimen from Station 1 2 cannot be referred to any of the described 
species of Clavularia. It forms a delicate investment of the tubes of a Tubularia hydroid, but 
there are also free pieces of stolon like very narrow ribbons. It is a true Clavularia with a 
calycine portion about 1 — 2 mm. in height into which a polyp region can be retracted. 
The features of the new species are the following : 
(1) the polyps are markedly distant from one another, a common interval being 7 mm: 
(2) the whole colony is covered with white spicules, mostly spindles; 
(3) the spindles lie longitudinally on the stolon, in eight narrow triangles on the retractile part 
of the polyp, and somewhat irregularly on the calyx; the maximum length is 0.4 mm. 
and breadth 0.1 mm., but common dimensions are 0.2 by 0.05 mm.; 
(4) the most abundant type of spicule is a very warty spindle, often with a tendency to zoning; 
but besides these there are some pseudo-clubs derived from spindles and some small rather 
jagged bodies. 
The described species to which this form is nearest seem to us to be Cl dispersa Kukenthal 
and Cl. tubaria Wright and Studer. 
3. Clavularia expansa n. sp. (Plate XI, Figs. 1 and 3; Plate XXIV, Fig. 10). 
Stat. 221. 6° 24' S., I24°39 / E. 2798 M. Solid bluish grey mud with Foraminifera, covered by 
a 5 cm. thick layer of brown mud, uppermost layer of Foraminifera. 1 Ex. 
Growing on a siliceous sponge spicule there is a Clavularian colony whose membranous 
expansion is spread over a continuous length of 6.3 cm. There is besides a separate patch. 
Most of the polyps have fallen off, but the height of the longest calyx is 8 mm., with a diameter 
of about 1.3 mm. The calyx rises at right angles, but is slightly twisted. It is rigid, with 8 
prominent longitudinal ridges and deep grooves between. It is long in proportion to the 
retractile portion. 
The specimen is not far from Cl. peterseni Kukenthal, but the spiculation is different and 
shows some approximation to some of the types in Cl. ebzirnea. 
The following spicules may be distinguished: 
(a) stout spindles, with ends often obtuse, covered densely with low but strong tuberosities, 
frequently compound; 0.4 X 0.07 mm.; 
( b ) some flattened almost scale-like forms, derivable from (a), with toothed margins, and relatively 
smooth surface; 0.37X0.12 mm.; 
