314 PERCY SLADEN TRUST EXPEDITION. 
16. Antipathes gracilis, Gray. (Fig. 10.) 
Syn. Aniipathella gracilis (Roule, Johnson), non Brook. 
Non Antipathes gracilis (Von Koch, Thomson & Simpson). 
One small and probably young colony of this much confused species was obtained, 
which fully agrees with the figure and description given by Roule, except in its rather 
smaller size. 
Further confusion is introduced into the synonymy of this form by the description by 
Thomson and Simpson of a new form under the name Antipathes gracilis, one specimen 
of which was obtained by the Sealark as noted below. 
Locality. Amirante Bank, 34 fathoms. 
Fig. 10. 
’ 
Fig. 11. 
17. Antipathes herdmani, sp.n. (Fig. 11.) 
Syn. Antipathes gracilis, Thomson & Simpson. 
One specimen was obtained, agreeing exactly with Thomson and Simpson’s descrip- 
tion and figure. As the name given to it by them is likely to cause further confusion 
with the species above, I propose to name it after Prof. Herdman, who conducted 
the expedition in Ceylon. Figures of both forms are given for comparison, drawn to 
natural size. 
Locality. Salomon Atoll, Chagos, 75 fathoms. 
18. Antipathes virgata, Esper. (Fig. 12.) 
Several colonies of this species were obtained, 3-4 feet in height, consisting of a bunch 
of stems arising from a common basal mass. The common “ parent” stem is an inch in 
diameter, and at its base swells out into a large lump over the coral rubble to which 
it is attached. The main branches are from }-} inch in diameter and give off subsidiary 
