i37 
locking; (c) large triradiates and quadriradiates covered with strong tubercles, sometimes massive 
and compound. A typical triradiate is about i mm. in maximum length, which is much larger 
than Kukenthal notes. But, of course, they occur in many sizes. 
There are in the collection 14 specimens, from 4 stations, which we would refer to this species. 
(a) Four small almost globular colonies, of a general pink colour, have short sterile stalks from 
the bases of which numerous stolons arise. 
In the largest the polyparium is 4.5 cm. in height and 5 cm. in diameter. The spicules 
of the branches and twigs are pink, but the polyps are white. The projecting anthocodial points 
are very marked in the largest colony, not so much in the three smaller ones. As we have 
noted elsewhere, however, this depends to a great extent on the degree of retraction of the polyp. 
Locality: Station 99. 
{ 6 ) One small colony and a portion of what was evidently a colony of about the same size. 
The spicules of the coenenchyma and the supporting bundle are dark red, but the anthocodiae 
are white. 
Locality: Station 258. 
(c) A portion of what was evidently a large colony. The spicules of the stem, branches, and 
supporting bundle are white, but in the majority of the polyps the anthocodial armature is red. 
The specimen is very badly damaged, but we feel justified in assigning it to this species. 
Locality: Station 258. 
( d ) Two complete colonies and a portion of another colony about the same size. In one colony 
the main stem divides into two large branches, each of which is distinctly spherical. In the other 
there are three main branches each of which again divides in two. A very marked feature is 
the enormous development of foliaceous branches at the top of the short sterile stalk. In the 
foliaceous expansion and on the lowest branches the colour is orange, but there are a few 
scattered red spicules in the coenenchyma. In the polyparium proper the branches are red, the 
polyps white, the anthocodial armature red. 
Locality: Station 279, 10—25 fathoms. 
(e) A small compact almost spherical colony, 5 cm. in diameter. The sterile stalk is very short. 
The general colour of the coenenchyma is white, but some of the spicules of the twigs and 
the projecting spicule of the supporting bundle are red. The spicules of the anthocodiae are white. 
Locality: Not recorded. 
There are also in the collection four small colonies, two from Station 164 and two from 
Station 258, which agree in anthocodial armature, but are distinctly divaricate in growth and 
show no hint of being globular or compact. 
They are all markedly flattened in one plane. They belong, however, to the Umbellatae, 
and show, as in the case of some other species, like D. stolonifera, that Umbellates sometimes 
pass through a divaricate stage in their general branching. 
Previously recorded from the China Sea. 
28. Dendronephthya pumilio (Stud.). (Plate XX, Fig. 10). 
For description see: STUDER, Ann. Mag. Nat. Hist. (6) vol. I, 1888. pp. 70—71. 
Stat. 99. 6°7'.5 N., 120 0 26'E. 16—23 M. Lithothamnion-bottom. 4 Ex. 
SIBOGA-EXPEDITIE XIII d. 1 8 
