28 
side is omitted. In both rows the number of branches is 34; the distance between two branches 
of the same row is about 6 mm 5 between the lowest branches this distance is somewhat larger : 
8 mm. The angle between the branches and the stem is by the lowest pair 45 degrees. By 
the following pairs this angle is always 6o°, but in the top-part of the colony this angle becomes 
somewhat more acute. The angle between the right and left branch of the first pair is fully 
30° (on the front-aspect of the colony); this value very suddenly increases, so that after six 
pairs both rows of branches lie in the same plane. The lowest branches are straight in their 
proximal part while their distal part is curved backwards •, along their whole course they are 
inclined towards the top of the colony. The higher the branches are inserted on the stem, the 
sooner they curve backwards, and they are inclined to the stem at a more acute angle; the 
top of the branches is often more highly curved. 
The length of the lowest branches is 20 cm.: the 10 th branch is 14 cm.; the 20 th is 
7.5 cm.; the last branch is 2.5 cm.. The stem is laterally compressed, just like the hook, but 
the plane is shifted with regard to the plane of the branches. 
The broad part of the hook bears on the convex side, which is the prolongation of the 
frontside of the stem, two rows of small spines, clearly the remains of the longitudinal rows 
of spines. These rows are continued at the lower part, but at last one simple row remains on 
the convex side of the hook; while the spines diminish in length, this row also disappears on 
a little distance of the end of the hook. So Brook’s statement that the rows of spines occur 
on the flat side of the hook does not hold good for this specimen, which is better in accordance 
with the twisting round of the axis, shown by the hook. I he rest of the hook-surface is 
smooth. On the greatest number of branches the spines occur only on the polyp-bearing side ; 
the other aspect of the axis is totally smooth. From a lateral aspect only two rows are visible. 
Some branches have also spines on the not-polyp-bearing side, but only very small ones ; in 
this case four to five longitudinal rows are visible. There is no further regularity in the dis¬ 
tribution of the spines. The spines (fig. 2) are smooth and triangular ; 
the longest are 40 p.; the distance between two spines is 195 — 300 p.. 
The polyps, which are preserved on the whole colony, are 
placed at the front of the stem and the upper-frontal side of the 
branches. Even on the unbranched part of the stem, on the right 
side in which direction the hook is curved, some polyps occur. On the coenenchyma which 
covers the thickest part of the hook, numerous sub-parallel transversal furrows are to be seen ; 
these are polypar borders. 
The polyps (fig. 3) are crowd¬ 
ed and young polyps are to 
Fig. 2. Schizopathes affinis (Br.) em. 
Spines on a branch, at the polyp¬ 
bearing side; 5 2 X* 
be found between the adult 
Fig. 3. Schizopathes affinis. (Br.) em. Three adult polyps and a young one; the oral cone of ones, even at the base of the 
the left polyp is lost; 7.6 X- 1,1 -ri v 
largest branches. — ihe dis¬ 
tance between the lateral and sagittal pairs of tentacles is 1.2—1.4 mm.; this distance is 
somewhat less than that between the lateral pairs of two adjoining polyps, which is 1.6 mm. 
or a little more. If there are young polyps present, this difference in distance is not so striking 
