90 
Fig. 77. Aphanipathes indistincta 
sp. n. Spines; 52 X- 
occur between neighbouring ultimate branches. These ultimate branches are a few mm. to 
0.75 cm. long; they are almost straight. The spines (fig. 77) have a convex proximal side 
and a concave distal side, which may be almost straight. The length 
of the spines is different on opposite sides of the axis, viz. 125 u. 
and 105 p.; it is remarkable that the longest spines are 
placed on the non-polyp-bearing side of the axis. Their 
mutual distance is 300 a. There are 5 longitudinal rows, alternating 
in a somewhat slanting, but regular quincunx. The surface of the 
spines is smooth. The polyps, which are more conspicuous than in 
the former species (figs. 78, 79), are transparent or opaque-white, just as the coenenchyma. 
The interpolypar distance is about 1.25 mm. The sagittal 
tentacles are 0.35 mm. long; the proximal 
lateral ones are 0.3 mm. and predomin¬ 
ate over the distal pair in a rather high 
degree. The polyps, which are placed in 
a single series, do not prefer a special side of the colony. The oral 
cone is round and low (or entirely flat), with slanting sides and a round 
mouth (fig. 79). The spines perforate the coenenchyma and the polyps, but this is caused more 
by the flatness and the transparency of the polyps than by the length of the spines, which is 
not so very great. So this species is a transition from the typical Aphanipathes- species towards 
the other subgenus Euantipathes , and for this reason I called it indistincta. The mode of 
branching is in some points like that of Arachnopatlies acnleata Br., but since the polyps are 
wholly lacking and there are several differences in spine-characters, I shall keep this species 
for the present apart. 
Fig. 78. Aphanipathes indistincta sp. n. 
Polyps; 15.75 X- 
Fig. 79. Aphanipathes in¬ 
distincta sp. n. Polyp ; 
15-75 X- 
D 
iagn osis 
Colony: Branched in every direction, at angles of 6o°—90°; distance 
between the branches a few mm. to 0.5 cm. Rare fusions. Length of the 
ultimate, straight, branches max. 0.75 cm. 
Spines : Smooth, somewhat distally inclined, convex proximal and 
concave distal side; length 125 and 105 a.; distance in the 5 longitudinal 
rows: 300 tx. 
Polyps: Transparent. Predominating proximal lateral tentacles (0.3 mm.). 
Interpolypar distance 1.25 mm. Low, round oral cone with round mouth. 
4. Aphanipathes retiadata sp. n. 
Stat. 301. io°38'S., 123 0 25 .2 E. Pepela-bay, East coast of Rotti-island. 27—45 M. Mud, 
coral and Lithothamnion. 1 spec. 
This specimen, which is in a rolled-up condition gives the impression of having acquired 
this shape through the preservation bottle. The habitus indicates that it is a fragment of a 
colony which was branched in a plane, possibly somewhat sinuous. There are a number of 
principal branches to be distinguished, all of which are secondarily branched. All of them are 
