I 2 I 
The spicules of the cortex in general are spindles densely covered with relatively large, 
rough-tipped, rounded tubercles. Especially on the shorter spindles do these tubercles stand out 
to a notable height like mammillae, projecting to about one-fifth of the breadth of the spindle. 
On the branches and twigs all the spicules are deep red, and there are numerous large 
spindles which tend to project on the surface in jagged fashion, and are on the whole trans¬ 
versely disposed. 
No spicules were found in the canal-walls. 
The following measurements were taken: 
(a) Supporting-bundle spicules.Up to 2 mm. 
(b) General upper-cortex spicules.Up to 4 mm. 
(e) Largest spindles of the cortex of the sterile stalk . . Up to 2 mm. 
III. Umbellatae. 
15. Dendronephthya habereri Kuk. (Plate XX, Fig. 9; Plate XXVI, Fig. 4). 
For description see: KUKENTHAL, Versuch einer Revision der Alcyonarien, II, 1905, pp. 638-641. 
Stat. 49. S°20 / .5S., i 19'4'.5 E. 369 M. Coral and shells. 1 Ex. 
Stat. 133. Anchorage off Lining, Salibabu-island. Up to 36 M. Mud and hard sand. 2 Ex. 
Stat. 164. i°42'.5 S., i30°47 / .5 E. 32 M. Sand, small stones and shells. 1 Ex. 
Stat. 258. Tual-anchorage, Kei-islands. 22 M. Lithothamnion, sand and coral. 1 Ex. 
Stat. 282. 8°25'.2S., 127 0 i 8'.4E. 27—54 M. Sand, coral and Lithothamnion. 1 Ex. 
Stat. 310. 8° 30'S., ii9°7 / .5E. 73 M. Sand, with few pieces of dead coral. 1 Ex. 
Stat. 315. Anchorage East of Sailus Besar, Paternoster-islands. Up to 36 M. Coral and Litho¬ 
thamnion. 2 Ex. 
Station unrecorded. 8 Ex. 
Anthocodial Grade and Formula : 
III = 5—6 p -{- o Cr -f- strong S. B. 
A re-examination of the specimens which Sherriffs referred to this species and also of 
those he referred to D. brevirama and D. disciformis, has caused us to modify the conclusion 
at which he arrived, and to transfer some of his specimens to other species. For example, 
3 specimens he referred to D. brevirama and two he referred to D. disciformis we now place 
in D. habereri , while for one specimen he placed in D. brevirama we have established a new 
species, D. armifer. 
We have also examined seven other specimens which we refer to D. habereri. 
Each specimen is here described separately, so that there should be no confusion. In all 
there are 17 specimens from 7 localities. 
As Kukenthal has pointed out, there is considerable variability in D. habereri ; and 
instead of multiplying species we prefer to note that this species has a somewhat elastic range 
of minute features. For example: (1) Some of the colonies are very compact and stiff, and the 
grouping of the umbels in hemispherical masses is so close together that an almost uniform 
surface results. In others the polyp-bearing branches are much more divergent and this gives 
the impression of an “open”, and not a compact colony. (2) Although as a rule the polyp 
stalks might be described as short, in some specimens they may exceed 1 mm.; and it should 
be noted that both types may be found on one colony. (3) The number of pairs of spicules 
SIBOGA-F.XPEDITIE XIII d. I 6 
