312 PERCY SLADEN TRUST EXPEDITION. 
13. Aphanipathes? hancock, sp. un. (Fig. 8.) 
A colony 15 em. high and 12 wide, branching in one plane with subsidiary branches 
which in many cases anastomose together. 
The polyps were absent. 
The spines are similar to those of the last species, but not quite so numerous and a 
little more bent upwards. 
The main difference between the two lies in the much closer reticulation of the 
branches in this form. 
Both approach A. cancellata in method of growth, especially the present form ; both, 
however, differ from Brook’s species in having smoother and longer spines. 
Locality. Salomon Atoll, Chagos, 75 fathoms. 
Genus ANTIPATHES, Pall. em. Brook *. 
14. Antipathes ? heterorhodzos, sp.n. (Plate 41. figs. 4.a-4e.) 
This curious species consists of a colony with a main axis 4°5 em. long, from each side 
of which arise in all sixteen alternate branches. These branches spread out in two 
planes forming, when viewed in section, a wide V with the main stem (PI. 41. fig. 4:¢). 
They are longest about the middle of the stem, where they reach a length of 6 cm. 
In addition to these branches there is a series of small bush-like branches placed along 
the main stem between the arms of the V described above. Each bush, of which there 
are 15 in all, consists of 5-6 branchlets springing from a short base and at first sight 
gives the impression of a small parasitic Antipatharian. That this is not so is shown by 
the connection of the skeletal canals throughout. 
* [I here follow Schultze’s classification and combine the genera Antipathes, Antipathella, Tylopathes, and Ptero- 
pathes. Of. Schultze, L. 8., “ Beitr. zur System der Antipatharien,” Abhandl. der Senckenberg. naturf, Gesellsch. 
Bd. xxiii. 1896, where his reasons for so doing are fully given. } 
