7 
said that the verruc® are all turned in the same direction but nevertheless there is clearly a 
tendency for them to turn towards one face, which in accordance with the nomenclature suggested 
by Miss EnGLanp and myself in our memoir on the Stylasterina, I shall call the anterior 
surface of the coral. A very characteristic feature of the species may be seen in the fact that 
many of the terminal branchlets (fig. 56,c) terminate in a pair of opposite verrucz so that 
these branchlets have the shape of a capital T. 
In the characters described above the specimens have some resemblance to Corallium 
sulcatum of KısunouyE and to Pleurocorallium tricolor and Pleurocorallium maderense of 
Jotunxsox. The first named of these species was obtained off Mera, Boshu, Japan from a depth 
of over 100 fathoms and the last two from deep water off Madeira. 
Reference to Kısumouve's (3) figure 2 Plate IV and to Jomnsow’s (1) figures Plate VII 
fig. ı and on p. 58 shows a decided similarity in growth and form to the specimen I have 
drawn in (figs 5 and 6) but particularly in the character of the T terminal branches. All of these 
species are rare. KısminouvE has seen only two specimens of C. swlcatum and JoHnson mentions 
only three specimens of ?. tricolor and one of P. maderense. 
It is difheult to separate definitely our new species from the three named species by 
the characters so far described, but in the character of the spicules there are differences which 
may be of importance. 
In the coenenchym of C. halmaheirense there are numerous crowded spicules of the 
octoradiate type (Fig. 9@) measuring, when full grown, ‚06—,07 mm. in length. They are very 
similar in form and shape to the spicules of C. regine but are decidedly smaller. In the 
verruc® the spicules are flattened spindles or rods (about 0,09 mm. X ‚oıs mm.) with many 
tubercles (Fig. 9). 
In the japanese species and in the species from Madeira there appears to be much more 
variation in the shape of the spicules of the coenenchym. KısuinouvE states that in C. sulcatum 
the spicules are of three kinds *sexradiate, septemradiate and double clubs’’ and Jornsox states 
that there are three forms of spicules in the cortex of Pleurocorallium tricolor and P. maderense 
of which the opera-glass shaped spicules are the most numerous. Unfortunately neither of these 
authors gives any statements in the text as to the size of the spicules but judging from the 
scale of the figures there is not probably much difference in this respect between the spicules 
of our species and those of the other three. In the two preparations of spicules I have made 
there is not much variation in the shape of those of the coenenchym. There is not a single 
one that could be called “opera-glass shaped’” and there are none of the irregular form figured 
by Kısminouve. 
It is quite certain that this species is dimorphic. Between the verruc& of the autozooids 
a number of minute white specks may be seen that are certainly siphonozooids, but as there 
is so little material at my disposal I have not made any sections to determine the general 
characters they exhibit or the sexual condition of the colony. 
In conclusion I may remark that I think these specimens from the Djilolo passage 
represent a distinct species but are too fragmentary in character to enable me to give a diagnosis. 
