FORSTER COOPER.—ANTIPATHARIA. 50 
Or 
3. Stichopathes longispina, sp.n. (Figs. 2, 2a.) 
A straight whip-like axis rather tapering in form. It is 92 em. long, lacking the base, 
and 1 mm. in its longest diameter. 
The polyps are flat with long digitiform tentacles, situated close together and having a 
diameter of 0°75 mm. 
The spines are arranged in 13 spirals. They are different in size on the two sides of 
Fig. 2. Fig. 2 a. 
the stem, being longest on the polyp-bearing side, where they attain a length of from 
0°4 to 0°5 mm. From this they gradually decrease in length as they proceed round the 
stem (fig. 2), the smallest spines, with a length of 0°14-0°17 mm., being exactly 
opposite the longest. 
The long spines stand straight out from the stem, the shorter are hooked upwards ; 
both are sharp. 
In this species the spines are longer than in any other Stichopathes hitherto described 
and are quite noticeable with the naked eye. Seen from one position the spines of 
course appear equal. 
Locality. Seychelles, F 3, 39 fathoms. 
4, Stichopathes alcocki, sp.n. (Fig. 3.) 
Part of a stem, a close spiral 30 em. long. The central canal in this species is unusually 
large, the wall of the corallum being reduced to a correspondingly thin shell. 
The polyps are irregular in size, the largest measuring just short of 1 mm. in diameter. 
As preserved they are very flat and the arms by comparison are long and digitiform ; the 
state of contraction among them is, however, very variable. In parts they are crowded 
together by the intercalation of youngermembers. The mouth is placed on a prominent 
oral cone. 
The spines are of two kinds. The major spines are arranged in 19 steep spirals. 
Those on the inside of the spiral are sharp, triangular, and hooked upwards. On the 
outside they are more bluntly conical and grow more at right angles to the corallum. 
SECOND SERIES.—ZOOLOGY, VOL. XII. 42 
