§5 
The stem is only very short (i cm.) and thick (1.25 cm.); it is immediately branched to a high 
degree in three principal branches and a number of lesser ones, which all of them are densely 
branched themselves. Everywhere the axis tapers gradually. The entire colony is firm and 
shrublike in shape, with a length of 0.5 m. and a greatest breadth of 0.6 m., which is 
found in the upper part of the colony. Although at first the branches are directed towards 
every side, there are two parallel planes to be seen, so that the colony is a thick plate, 1 dm. 
thick. There are no fusions between the branches, although on some places the coenenchyma 
of neighbouring branches is adhering. The lesser branches are for the greater part inserted 
bilaterally, and on a great part of the colony even unilaterally, however without letting their 
planes coincide exactly with the principal plane of the colony. The branches are inserted at 
an angle which varies from 45 0 to 90°. The ultimate branches, the length of which is 
about 5 cm., are slender and often curved in a rather high degree, so that I have called 
this species curvata. They give the entire colony a rather confused appearance. The polyps, 
which are dried to an unrecognisable mass, are found especially on one side of the colony. 
The spines (fig. 68) have their distal side straight or concave, inclined distally at a 
rather variable degree; their proximal side is concave at its base, convex at the top. Some¬ 
times the entire spine is sinuous. They are arranged in 7 longi¬ 
tudinal rows, which alternate in a quincunx, which is often irregular 
or slanting. The mutual distance varies from 240 to 280 p; their 
length (110 a) is equal on all sides of the axis. Many spines show 
J 1 Fig. 68. Eua?itipathes ? curvata sp. n. 
a tendency to doubling their apex, while also excrescences may Spines; 92.6 x* 
occur on the distal side as well as on the proximal side of the 
spines. The surface of the spines may have little warts in a great number on their base 
and on their apex. 
Diagnosis: 
Colony : densely branched in one or more parallel flat planes; ulti¬ 
mate branches arranged bi- or unilaterally, nearly in the colony-plane, 
so that the colony has a marked thickness. — Firm. — Ultimate- branches 
± 5 cm.; angle of insertion 45 0 —90°; slender and curved (or sinuous). 
Spines : distally inclined; concave distal side, convex and concave 
proximal side; surface smooth or provided with little excrescences on 
base and apex; 7 longitudinal rows and quincunx; mutual distance 240— 
280 p ; length 11 o p, equal on all sides. (Often deformations.) 
Polyps : shape unknown; on one side of the colony. 
2 nd Subgenus Aphanipathes (Br.) emend. 
1. Aphanipathes Sibogae sp. n. (PI. VIII, fig. 2). 
Stat. 80. 2°25'S., II7°43'E. Borneo-bank. 50—40 M. Fine coralsand. 1 spec. 
This colony, a very fine specimen and covered with well-preserved polyps, is more than 
30 cm. in height, and is branched in a plane. The basal diameter of the stem is 2.5 mm.; as early 
as 0.75 cm. above the base a very dense branching begins, without much regularity, except 
