30 
There is no possibility of mistaking a siphonozooid for a young autozooid bud, which from a 
very early stage shows longer tentacles with a distinct suggestion of pinnules. Some of these 
young autozooids are also found at the margin. The spicules are very numerous throughout 
the whole colony. 
In another and well preserved specimen, the trunk has a height of 1.3 cm. and a 
maximum diameter at the top of 1.3 cm. 
In this specimen the rather more numerous autozooids are in a better state of preservation, 
up to 7 mm. high, with the tentacles up to 6 mm. long, showing very clearly the pinnules 
arranged in three regular rows on each side up to 29 in a row, with a clear bare mid-streak 
up to the tip. The siphonozooids, less conspicuous in this specimen, are crowded between the 
bases of the autozooids. They do not exceed 1 mm. in height and for the most part are less 
than 1 mm. The lobe-like tentacles are less conspicuous, all that can be seen in most cases 
being eight indentations round the margin at the top. We were unable to detect any mouth 
opening in the smaller ones. 
In various autozooids one or two curious abnormal stunted tentacles were observed, 
sometimes as small as 1.5 mm. long in a polyp where the other normal tentacles were up to 
7 mm. in length. The tip of such an abnormal tentacle was bent round to the oral surface 
where a small swollen pocket was formed about 1 mm. across. The pinnules were reduced to 
mere lobe-like swellings on each side of the tentacle and were of course greatly reduced in 
number. When dissected, the small swellings or pockets at the tips of these abnormal tentacles 
were found to contain a small parasitic copepod, about 0.9 mm. long, (with no eye-spot) which 
generally lay in the same position, transversely across the pocket in which it snugly fitted. 
Several of these copepods carried egg-sacs. 
The question arises as to whether the small pocket is simply an enlargement of the 
tentacle cavity at the tip into which the small crustacean has passed from within the polyp; or 
whether the pocket develops as a fusion of the oral surface of the tentacle with the sides oi 
the tip which has enwrapped the copepod. In the great majority of the infected tentacles 
examined the whole appearance of the pocket strongly suggested the first alternative, and its 
cavity was definitely continuous with the tentacle cavity. Hence the copepod would certainly 
seem to have entered from within. In one interesting case, however, of a slightly stunted tentacle, 
5 mm. long and with well-developed pinnules, the tip was found curled over and tightly 
gripping a copepod. 
As far as we are aware, this is the first recorded case of copepods parasitic w i t h i n 
the structure of an Alcyonarian. 
Another specimen from Saleyer with an unbranched stock, about 1 cm. high and 8 mm. 
broad, shows similar badly preserved large autozooids and fairly numerous siphonozooids. 
A colony from Station 33, Bay of Pidjot, we also refer to this species, though, unlike 
our other specimens, it shows a trunk dividing into two stems. The total height is 2.2 cm. 
The trunk, with a diameter of 4 mm., arises from a membranous expansion fixed to a piece of 
madrepore; 8.5 mm. from the base it divides into two stems, the summits of which bear the 
polyps. The larger stem has a maximum diameter of 6 mm. The autozooids are in a state ot 
great contraction with wrinkled bodies. The tentacles, though in rather bad preservation, show 
