57 
branches is a few cm. to 18 cm. The sharp spines have an elongated base (fig. 41), a length of 60 u 
and a mutual distance of 300 p; there 
are 5 longitudinal rows alternating 
in a straight quincunx. The polyps, 
of the same shape as in the speci- 
VJ. 
avc- 
‘xr 
\r 
mens of station 313, have an inter- 
Fig. 40. Eiia?itipathes dichotoma 
(Pall.) 11. n. Polyp; 21 X- 
Fig. 41. Euantipathes dichotoma 
(Pall.) n. n. Spines; 52 X- 
tentacular distance of 1.75 — 2 mm. 
The length of the sagittal tentacles is 150 p, of the lateral ones 180 p (proximal) and 135 p (distal). 
The four colonies of station 184 are all of them slender and thin. The stem is curved 
and its length is respectively 9, 4, 6.5 and 14 cm. The curved branches have a length of a 
few mm. to 7 cm. and a mutual distance of 3 mm. to 5 cm. They are inserted on all sides of 
K 
iX- 
$X- 
cE> 
<c 
1 7 ^ 
Fig. 42. Euantipathes dichotoma (Pall.) n. n. 
Spines; 52 X- 
Fig. 43. Euantipathes dichotoma (Pall.) 11. n. 
Polyp; 21 X- 
the stem at an angle of 45 0 or less (30°—45 0 ). A few secondary 
branches occur at the same angle, d he spines (fig. 42) are in¬ 
clined distally, but in other respects they are very much like those 
of the former specimen. On one colony they are steeper. — 
The number of rows is 4 or 4—5 with a straight or slanting 
quincunx. The length of the spines is 80 p and 45 p ancf their mutual distance is 350 p. 
Two colonies have polyps (fig. 43) with a intertentacular 
distance of 2 mm. or somewhat less, variable through the inter¬ 
polated young polyps. The tentacles are thin when compared 
with the large oral cone; the sagittal ones are inserted on 
a high level. The length of the tentacles is 0.45 mm.; the 
sagittal diameter of the oral cone is 0.375 mm., the transversal one is 0.4 mm. The mouth is 
inconspicuous. On one colony the parasitic bubbles occur. 
One of the specimens of station 204 has fork-angles of 45 0 or 6o°. The diameter of the 
stem increases in the first 3 cm., and the same holds true for the first branch but not foi 
the other ones. The length of the branches varies from 1.5 cm. to 11 cm. and their mutual 
distance is 2.5 — 2.75 cm. The branches are not lying in the same plane and they aie sinuous 
or straight. The whole colony is thin but strong enough to stand upright. 
The spines (fig. 44) are triangular and at right angles with the axis. 1 heir 
length is 45 p; their distance is 240 p, and they form four rows in a 
straight quincunx. The polyps (fig. 45) are white and sit like cushions on 
the axis, just as Brook indicated as a typical character of his genus 
Tylopathes. They are inserted in a single row with an intertentacular distance of 1.25 mm. 
There is a great difference in size between the 
proximal and the distal pair of lateral tentacles; 
the proximal ones are inserted on a strikingly high 
level so that the entire polyp is exceedingly 
distally inclined. The distally inclined oral cone is 
Fig. 45. Euantipathes dichotoma (Pall.) b Polyps; «, b 14 X- 
large and dome-shaped with a small round mouth. 
The entire polyp is rather transparent; the transversal groove between the polyps is conspicuous. 
SIBOGA-EXPEDITIE XVII. 
Fig. 44. Euantipathes dicho- 
ioma{ Pall.)n. n. Spines; 52 X* 
