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ı. Corallium regine Hickson. (Figs ı, 2, 3, 4, 8, 10). 
S. J. Hıckson. Konink. Akad. Wet. Amsterdam, Oct. 12, 1905. 
Stat. 280. 8°17'.4 S:, 127°30'.7 E. 122 Metres. Fragments. 
Stat. ? Label lost. Fragments. 
Colony branching irregularly but principally in one plane. Autozooids situated on one surface 
only except at the extremities of the branches. Autozooids in retraction form irregularly scattered 
hemispherical verruc& 1,5 mm. in diameter. Siphonozooids very small, in some cases indicated by 
minute papille or tubular pores but usually inconspicuous, numerous, unevenly distributed. Gonads 
borne by the siphonozooids only. Spicules octoradiate ‚075—,08 mm. in length. Colour pink. 
The specimens of this species consist of one colony (Fig. ı) from Station 280, considerably 
broken, which may have been about So mm. in height. The base of attachment is 6 mm. in 
diameter and the main branches are at their bases 4—5 mm. in diameter. 
Another specimen (Figs 2 and 3) 37 mm. in height with a diameter at the base of 
3 mm., together with two broken off branches, one of which is figured X 3 (Fig. 4) were 
found in another bottle of the Siboga collection the label of which was unfortunately lost or 
destroyed when the fire broke out in my laboratory. | 
The axis is very hard and takes a polish as well as that of Corallium nobile. In transverse 
section it shows a pale central spot and one or two white rings arranged concentrically round 
the centre. The colour of the axis is a rather dark pink but has been described as *good' by 
an expert who examined it. In both specimens there are places where the axis is fistulose, a 
well-known deformity of growth which in the Japanese corals is due to the action of a commensal 
Polynoe. 1 did not discover the worm that causes the deformity in these specimens. 
The verruc& that mark the position of the autozooids are found principally on one side 
of the colony as they are in Corallium japonicum, C. sulcatum, C. elatius, C. johnstoni and 
several other species. At the extremities of the branches a few verruce may be found on the 
reverse side but on all the larger branches this side is quite smooth and shows no verruce. 
The verruce are nearly all hemispherical in form projecting about 1,5 mm. from the 
surface of the coenenchym and being about 1,4 mm. in diameter. They are scored externally 
by eight radiating grooves (fig. 4). 
The siphonozooids are very small. This is a statement that cannot very well be reduced 
to figures by the study of preserved specimens. Some of the siphonozooids have an open mouth 
placed at the extremity of a minute papilla but the coenenchym is so contracted in most places 
that it is difhicult to determine the position of the siphonozooids, the mouth being closed and the 
verruca withdrawn. Any statement, therefore, as to the size of the mouth might be misleading. 
In all the siphonozooids in my series of sections the body cavity is distended with the 
gonads Fig. 10. There appear to be usually four gonads in each siphonozooid. The colony is 
male. No ova occur in any siphonozooid examined. One gonad was nearly ripe and this measured 
‚05 mm. in diameter. The stomodaeum and mesenterial filaments are so distorted by the enlarged 
gonads that they were difficult to investigate but these structures when compared with those 
of Corallium nobile, have the appearance of being degenerate. I have found that the longest 
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