cross-groove occurs. Between the adult polyps young ones are to be found, alternating rather regularly 
in some places (fig. 52). On the thinner ^ 
parts of the axis the polyps are some¬ 
what transversally elongated. The 
spines are visible through the coenen- Fig. 52. Euantipathes dichotoma (Pall.) n. n. Polyps; 11.5 X- 
chyma, and sometimes even through 
the oral cone. This specimen, nearly related to Antipathes mediterranea Br., differs chiefly in 
the lower number of rows of spines and a lesser distance between the polyps. 
The complete colony of station 257 has a basal plate with a diameter of 2 mm. The 
stem (4 cm.) is straight or irregularly sinuous and tapers regularly. The branches are curved 
and bear secondary branches at irregular interspaces. The fork-angles are 45 0 —6o° but never 90°. 
For the greater part the branches are lying in a plane with rare exceptions. The spines are 
the same as in fig. 48c; they are very sparingly inserted near the base of the stem and 
on the base itself they are entirely absent. On the other parts there are 4(—5) longitudinal 
rows, alternating rather regularly in a quincunx. They are subequal in length (75 p.) on all 
sides of the axis. Their mutual distance is 360 p., but this value is variable. The polyps (fig. 53) 
are greyish brown and placed in a single row. 
Young and adult polyps alternate, sometimes 
very regularly; the cross-groove between the 
polyps is clearly visible. The sagittal tentacles 
are inserted on a lower level than the lateral 
ones. With some polyps the oral cone is entirely 
flattened and in collaps. The spines perforate 
the young polyps at the utmost. 1 he inter- 
tentacular distance is 1.25 —1.5 mm. The length 
of the tentacles is 0.25 mm. (sometimes the 
sagittal ones are less). The mouth, often not 
clearly visible, is small and rounded (fig. 53^). 
A near relationship between this specimen and Antipathes aenea v. Koch is not to be doubted, 
only in structure of the polyps there are differences, while 
the length and the distance of the spines in A. aenea v. Iv. 
are greater. In character of the spines it is nearer related 
to Antipathes ftircata Gray (emend. Sch.). 
The colony of station 164 is 27 cm. in height, slightly 
curved, rather brittle, and densely branched. The broken 
stem is 1.5 cm. long (diameter 2.5 mm.). The branches lie 
almost in the same plane, and they are inserted at angles 
of 30°, except in one case of 45 °- The branches are curved, 
sometimes to a high degree. The ultimate branches (of 
the 4 th order) have a length of one to several cm., and 
in their top-part they are sub-parallel with the stem, d he diameter of stem and blanches 
Fig. 53. Euantipathes dichotoma (Pall.) n. n. a Polyps; h polyp 
with biserial-arrangement of the tentacles; a, b 14 X- 
Of 
X 
Fig. 54. Euantipathes dichotoma (Pall.) n. n. 
a Spines on younger branches; b Spines on an older 
branch; b 5 2 X- 
