yellow-tipped anthocodise, which can just be seen appearing through the open ends of the 
rudimentary cup-shaped verrucae. 
The anthocodial armature consists of a crown of about 6 rows of red spindles, and 
points with 5 pairs of spicules, arranged so that three are en chevron at the base, and two 
lie parallel and more or less vertical at the top. 
Large stout white spicules, with small compound warts very close together (3.1 X 0.47 mm.), 
occur in the walls of the canals, along with minute red spicules. The majority of the spicules 
of the outer wall are slender red spindles with small warts (0.9 X 0.07 mm.). 
Previouslv recorded from Palan Islands. 
J 
7. Siphonogorgia gracilis (Harrison). (Plate IV, Figs. 2 and 4). 
See: HARRISON, Some new Alcyonaria from the Indian and Pacific Oceans, Journ. Linn. 
Soc. 1908, p. 118. 
Stat. 289. 9°o'.3 S., I26°24 / .5E. 112 M. Mud, sand and shells. 1 Ex. 
Several very broken, slender, red branches with yellow polyps, mainly at their tips, 
resemble Miss Harrison’s S', gracilis in (1) anthocodial armature, as far as her description goes; 
(2) the slender branches; (3) the occurrence of the polyps in groups and often on short stalks; 
(4) the coloration. 
Miss Harrison's description is not full enough to allow of certain identification, but so 
far as can be seen, her S', gracilis is the most nearly related to the present specimen. 
The points of note with regard to it are : 
(1) The crown consists of 5 rows of spicules, and the points show 2 pairs of slender spicules 
of which the outer pair are the larger. There may be a smaller one between them. 
(2) The verrucae are few and far between, along the branches, but crowded in groups of four 
or five at the tips. They are large and cup-shaped and support the crowns of the antho- 
codiae, which are for the most part unretracted. A few, however, are completely enclosed 
by the verrucae. 
(3) There are four large canals, with thin walls. 
(4) Most of the spicules are small and slender, red or pink, with prominent compound warts 
(1.1 X 0.16 mm.). Others occur, pale pink in colour and smaller, with a few simple warts 
far apart (0.52 X 0.06 mm.). 
Previously recorded from the Admiralty Islands. 
8. Siphonogorgia grandior Chalmers. 
See: CHALMERS, Proc. Roy. Phys. Soc., Vol. XXI, Part 4, p. 167. 
Stat. 289. 9 °o'g S., i26°24 / .5E. 112 M. Mud, sand and shells. 3 Ex. 
Three tall, narrow, yellow colonies, between 4 and 6 cm. in height, and 4 to 5 mm. 
broad at the base of the main stem, gradually tapering towards the top. The branching is very 
slight, one specimen giving off three branches, and the others two each. These branches rise 
almost perpendicularly, and are not again sub-divided. Polyps occur all over the stem and branches. 
SIBOGA-EXPEDITIE XIII d. 
22 
