26 
The largest colony has a rounded, fleshy but rather flaccid, stalk 6 cm. in height and 
i cm. in breadth. It splits into two main trunks, each of which divides again and begins to bear 
polyps at a height of 6 cm. from the base. The polyps have an average height of about 
12 mm. not including the tentacles, but they may attain a length of 23 mm. 
A very similar specimen from Tual, but with a rather shrivelled stalk, has a total 
height of 6.3 cm. of which 4.6 cm. belong to the unbranched trunk. 
Two small specimens from Station 50 Labuan Badjo we take to be colonies of this 
species with the polyps in a state of great contraction. The pinnules are in a bad state of 
preservation, but there appear to be two rows on each side of the mid-line. The polyps show 
numerous wrinkles in their contracted state and are much more rigid, standing more or less 
upright when taken out of spirit. The maximum length is 8 mm. The larger colony has a 
height of 2.9 cm., with a basal trunk, 7 mm. in height and diameter, which divides into two 
branches with the polyps arising from their summits. The consistency of the stem is stout and 
fleshy and the colour of the whole colony is a light brown. 
Previously recorded from Ternate. 
4. Xenia viridis Schenk. 
For description see: A. SCHENK, Abhandl. Senckenberg. Nat. Ges. vol. 23, 1896, p. 62, 4 figs. 
Stat. 33. Bay of Pidjot, Lombok. 22 M. and less. Mud, coral and coral sand. 3 Ex. 
Stat. 174. Ceram. Reef. 6 Ex. 
Several specimens of a grey-brown colour with greenish polyps seem referable to this 
species. The very minute spicules are circular and oval discs like red blood corpuscles, from 
0.01—0.02 mm. across. They are very numerous, especially on the surface of the tentacles. 
The polyps are short and broad, up to 5 mm. in length and 2 mm. in breadth, borne 
in some specimens rather closely crowded, in others sparsely on the surface of the stout smooth 
stem, which in every case but one, where it divides near the base, is unbranched. Average 
dimensions of a stem are 9 mm. high and 6 mm. in diameter. 
The tentacles, up to 5 mm. in length, bear three rows of pinnules on each side of the 
mid-line, up to 15 or 16 in each row. These are low warts towards the base, but longer and 
more pointed towards the tip. 
Previously recorded from Pacific Ocean (Ternate and New-Caledonia). 
5. Xenia umbellata Savigny. 
For description see: KLUNZINGER (1877) p. 39, I fig.; THOMSON and HENDERSON (1906) p. 410. 
Stat. 33. Bay of Pidjot, Lombok. 22 M. and less. Mud, coral and coral sand. 2 Ex. 
Stat. 34. Labuan Pandan, Lombok. 18 M. Coral reef. 2 Ex. 
Stat. 40. Kawassang, Paternoster Islands. 12 M. Coralreef. 2 Ex. 
Stat. 64. Djampeah. Up to 32 M. Coral, coral sand. 1 Ex. 
Stat. 93. Sanguisiapo, Sulu archipelago. Lithothamnion-bottom. Sand and coral. (Formol pre¬ 
servation). 10 Ex. 
Stat. 43. Sarassa, Postilion Islands. Up to 36 M. Coral. 3 Ex. I _ ,, 
Stat. So. Haingsisi. Shore. , Ex. Badl - V P reserved 
Stat. 250. Kur Island. 20 — 45 M. Coral and Lithothamnion. 2 Ex. ' specimens. 
