41 
higher order the polyps are arranged irregularly but still principally at the outside of the 
branches. The tentacles are round knobs, covered with little warts, the tops of which bear a 
sharply defined red spot; these warts are arranged in regular, alternating verticils round the 
tentacles and the oral cone; each wart bears in its top a nematocyst-battery. The sagittal 
tentacles are inserted at a lower level than the lateral ones. Oral cone and mouth are both 
rounded. — The basal diameter of the sagittal tentacles is 270 p„, of the lateral ones 225 p. ; 
they are conical in shape and their base is sometimes constricted; their length is 180 a. The 
diameter of the oral cone is 240 p. and of the mouth 75 p.. — On thicker branches the 
tentacles are radially inserted. The interpolypar distance is ± 0.75 mm. — The polyps on the 
stem have their sagittal tentacles at a slightly greater distance from the oral cone than the 
lateral ones, but the difference is very slight. On the stem all the numerous spines perforate 
the coenenchyma ; since for this reason the polyp-boundaries are not always clear, the colony gets an 
Aphanipathes- type, as Brook understood it; a branch, not covered by polyps, makes through 
the rather long spines the same Aphanipat/ies-efiect. 
The specimen of station 305 is only the crown of a colony, with a length of 8 cm. 
The only deviations, which this specimen shows, are the following: a plane of symmetry may 
be brought through the stem; all branches curve towards this plane, so that, viewed from the 
top of the colony, half of the number of branches shows a negative rotation and the other 
half a positive one. The length of the branches is not the same on all sides of the stem ; the 
longest ones are 3.5 cm. The entire colony is yellowish and the polyps are milkwhite, without 
coloured spots. The form of the spines is somewhat longer and blunter. —- For the rest the 
mode of branching, the polyps and the spines are the same as in the other specimen- and 
there is not much reason to consider this specimen as a variety apart. 
The fine specimen from Makassar, collected by Kraay, was dried, without traces of 
polyps. The height of the colony is 35 cm.; it is almond-shaped, oval in cross section, with 
a long axis of 17 cm. and a short axis of 10 cm. The branches are branched from their base; 
they are curved upwards and besides partly to the right, partly to the left from the plane through 
the short axis of the colony. — The principal stem is on a height of 15 cm. forked in two branches, 
which are a continuation of the stem, but one of which is twice as long 
as the other. The spines (fig. 14 a) are rather sharp, distally inclined, with 
a concave distal side and a convex proximal side. Their surface is nearly 
smooth; only at the top (except at the ultimate point) fine striations may 
be observed. They are arranged in 6 regular longitudinal rows, alternating 
in a regular straight quincunx. — Their mutual distance is 180 — 200 p., 
while their length is 175 p. and 137 p. on opposite sides of the axis; the 
shorter spines are more distally inclined than the long ones. 
The older descriptions of the mode of branching and the form of 
the spines differ only in minor points of the Siboga-specimens. As the var. 
paniculata Esper obviously only slightly differs from Antipcithes cibies Gray, n n Sl , ines . „ 2 ^ 
viz. „in having longer and more lax branches, the basal portions of which 
are usually devoid of branchlets” and in this latter point is like the Siboga-specimens, we can 
SIBOGA-EXPEDITIE XVII. 6 
Fig. 14a. Eitantipathcs abies 
