55 
Two young brown colonies from Station 142 Laiwui, Obi, show the same features, but 
owing partly to a greater state of contraction and partly to the state of preservation the auto- 
zooids and the siphonozooids are more distinct. The surface is moderately hard and rough. 
The larger colony has a total height of 2.5 cm., of which 2.2 cm. is stalk. The main 
diameter of the stalk is 0.8 cm. The diameters of the rather twisted and elongated capitulum 
are 2.2 cm. and average of 0.8 cm. The number of siphonozooids around one autozooid is 6—9. 
The smaller colony' has a total height of 2.8 cm., of which 2.6 cm. is stalk. The diameters 
of the stalk are 0.6 and 0.2 cm. The capitulum has a diameter of 1 cm. The spiculation in 
both agrees with other specimens. 
A very young, rather dried specimen from Station 299, Plate XVI, fig. 6, with a height of 
1.2 cm., has the capitulum (0.8 X 0.6 cm. in diameter), bent down on one side on to the stalk, so 
that the specimen is flattened in one plane. The wrinkled stalk broadens from what is practically 
a pointed base to the edge of the disc. The numerous autozooids, which occur evenly over the 
whole surface, can be seen clearly, but the siphonozooids are very indistinct. The spiculation 
shows all the above types. The colour is brownish, and the surface very gritty. 
Another specimen from Station 142 has a total height of 2.6 cm., of which 2.4 cm. is 
stalk. The diameters of the capitulum are 1.5 and 1 cm. The texture is softer than in the other 
specimens but there is otherwise very close agreement, with numerous autozooids, siphonozooids 
occurring in a single row between them, and an identical spiculation. 
A stone coloured colony from Station 133, is somewhat saucer-shaped, with the margin 
slightly twisted, and with a total height of 1.2 cm., of which 1 cm. is stalk. The maximum 
diameters of the capitulum are 2.7 cm. and 1.5 cm., and of the stalk 2.9 and 1.2 cm. The 
texture is hard and the surface gritty. This specimen differs slightly from the other young 
specimens of S. acutangiilum in its rather greater hardness, and in the occurrence of a heavier 
and coarser type of spicule than we observed in the other young forms. At the margin of the 
capitulum only one siphonozooid is seen between two adjacent autozooids, but toward the centre 
there are up to four siphonozooids between two autozooids. 
The following are the types of spicules: 
( a ) long spindles covered with simple prominences. These attain a length of 0.52 mm. and a 
breadth of 0.02—0.04 mm. Many of the coarser forms are bent and twisted; 
( b ) coarser, shorter, spindles densely covered with compound warts, very often arranged in whorls. 
Dimensions up to 0.4 X 0.1 mm.; 
(r) short clubs with large very densely warted heads, the warts being either compound, with the 
lower ones of the head in a whorl, or upward growing closely massed and with irregular 
prongs. Dimensions are 0.1 X 0.05 mm.; 0.17 X 0.07 mm.; 0.24 X 0.05 mm. 
Previously recorded from Tonga; Port Hedland, N. W. Australia; Shark’s Bay, Australia; 
and Ceylon. 
2. Sarcophytuin ehrenbergi Marenzeller. (Plate IX, Fig. 1). 
For descriptions see: 
Marenzeller, Uber die Sarcophytum benannten Alcyoniiden, Zool. Jahrb., 1886, I, p. 356, 2 figs. 
BURCHARDT, Alcyonaceen von Thursday Island II, Semon’s Forschungsreise, 1898, p. 677, 3 figs. 
Pratt, Alcyonaria of Maldives, 1903, p. 508, 2 figs. 
