rather rotund, others tending towards scales. These irregular knobbed forms cover the stolon, 
while the narrow spindles occur as a crown and points on the polyps. The single specimen 
is so small that we have refrained from giving it a name. It seems to us like a very young 
stoloniferous stage of a type allied to Erythropodium or Sympodium. 
Deceptive Fragments. (Plate XXI, Fig. 8). 
Stat. 60. Haingsisi. Reef, i Ex. 
Stat. 81. Sebangkatan, Borneo-bank. 34 M. Coral bottom and Lithothamnion. Several Ex. 
Several badly preserved fragments of a pronounced white colour, with a marked suggestion 
of shrunken Alcyonium or Lobularia colonies, and showing on some of the zooids eight tentacles 
(non-pinnate however), turn out to be compound Tunicates, not far removed from Sarcodidem- 
noides. The calcareous spicules, minute tuberculate spherules, are more refractive than those of 
Alcyonarians; as an instance of deceptive convergence we have figured a few. 
(Plate XXI, Fig. 1). 
Stat. 227. 4 0 5o'.5 S., I27°59'E. 2081 M. Grey mud with an upper layer of brown mud, both 
mixed with sand. 1 Ex. 
Another interesting fragment is at first glance suggestive of a piece of an Anthelia. Most 
of the beautiful spicules are broad, very thorny rods and substantial crosses, the thorns being 
sharp, outstanding and densely crowded. There are also slender rodlets and crosses, with incon¬ 
spicuous or less conspicuous roughness. But- the spicules are exceedingly refractive and certainly 
not calcareous. They are doubtless the siliceous spicules of some sponge. We have figured a few. 
ERRATA. 
Reconsideration leads us to withdraw Sinularia tentaculata n. sp., Plate XVI, fig. 8, and 
List of Species, p. 4, in favour of Sinularia flexibilis (O. G.). 
We must also withdraw Siphonogorgia flavorubra n. sp. Plate XXV, fig. 11, leaving it 
simply Siphonogorgia (?) 
28* 
SIBOGA-EXPEDITIE XIII d. 
