i73 
FourTigid colonies of a yellow colour, standing 5.5—3.5 cm. high, and one small fragment 
of a colony. The main stem is broad and massive, especially at the base, where in one specimen 
it is 12 mm. across. The branches are short and lobate and arise ^about half way up the main 
stem. Polyps occur close together on the branches and on the upper portion of the stem. 
There is nothing very remarkable about the specimens, and yet the spiculation cannot be 
identified with that of any of the numerous species. What is characteristic in the spindles is 
the bluntness of both ends in the great majority; often they are broadly clubbed or knobbed 
at the ends. 
The anthocodial armature consists of a crown of 4—5 transverse rows, and points formed 
by 3—4 pairs of spindles in chevron. The anthocodiae are yellow in colour. Prominent verrucae, 
long and cylindrical, occur all round. The anthocodiae are completely retracted within them. 
The stem is of the Chironephthya type with large internal canals and thin walls. 
The largest spicules are 3.8 X 0.4 mm. They incline to be somewhat narrow rods, often 
approaching the finger-biscuit type with blunt, often clubbed, ends. They are thickly covered 
with warts, standing out vertically, often low, slender, and simple; but on the broader spicules 
low, broad, and compound. 
16. Siphonogorgia obtusa Chalmers. 
See: CHALMERS, Proc. Roy. Phys. Soc. Vol. XXI, Part 4, p. 167. 
Stat. 144. Anchorage north of Salomakiee (Damar)-island. 45 M. Coral bottom and Litho- 
thamnion. 1 Ex. 
Stat. 310. 8° 30'S., 119 0 7 r . 5 E. 73 M. Sand with few pieces of dead coral. 1 Ex. 
Two specimens resemble X. mirabilis in many ways, but they have broader crowns in 
the anthocodiae, and more massive spicules. One is dark red in colour with pink anthocodiae, 
and the other orange red with orange anthocodiae. There is very little branching, a main stem 
and one short branch forming the whole in both colonies. The base of attachment is present 
in only one of the specimens. It is 4 mm. broad, and the stem gradually diminishes to 2.5 mm. 
at the top, the total height being 6.5 cm. Polyps occur on the main stem and on the branch, 
but the main stem is barren for a height of 2 cm. The crown of the anthocodiae has 8-—10 
rows of spicules, and the points have two pairs of large spicules converging at the top, with 
one single small spicule or a pair of small spicules between them. The verrucae are composed 
of very small spicules, and are open at the top, so that they are cylindrical rather than cone- 
shaped, and the retracted anthocodiae can, in some cases, be seen. 
The canal walls are thick with spicules. The spicules of the general coenenchyma are 
short and broad, with very large spherical warts close together. They are yellow-greenish brown, 
and also pink. Some of the smaller ones are the same length as breadth. A common size is 
1.3 X i -4 mm. 
17. Siphonogorgia pahnata Thomson and Simpson. 
For description see: THOMSON and SlMPSON, An account of the Alcyonarians collected by 
the Royal Marine Survey Ship, Investigator, in the Indian Ocean, Part II, 1909, p. 133. 
Stat. 260. 5 0 3645 s., I32°55 / .2E. 90 M. Sand, coral and shells. 1 Ex. 
