152 PERCY SLADEN TRUST EXPEDITION". 



Except in (d) and perhaps in (e) there is not in this species any representation of the 

 shield and boss type of spicule which is characteristic of Bebryce, but it is linked to 

 B. mollis, Philippi, by an Indian Ocean species, B. tenuis, in which spheroidal bodies 

 occur along with the shield and boss type. 



Locality. Providence (D 4), 50-78 fms. 



Genus ACAMPTOGORGIA. 



23. Acamptogorgia spinosa, Hiles. 

 Fov description see : — 



Hiles : Proc. Zool. Soc. 1899, pp. 47-48, pi. 1. figs. 3-5. 



An imperfect and apparently weathered specimen, which resembles in its spiculation 

 A. spinosa, Hiles, but is of a much stouter growth, may be referred to this species. 



Locality. Mauritius (A 1), over 100 fms. 



Previously recorded from Funafuti, 40-90 fms. {Hiles, 1899) and from Galle {Thom- 

 .wn and Henderson, 1905). 



24. Acamptogorgia ceylonensis, nom. n. 



{ = Echinomuricea ceylonensis, Thomson and Henderson.; 



For description see : — 

 Thomson and Henderson : Ceylon Pearl Oyster Eeport, No. xx. 1905, p. 292, pi. 6. fig. 6. 



A number of fan-shaped colonies, branched in one plane and of a deep purple or 

 almost black colour, seem to be identical with the specimens described by Thomson and 

 Henderson under the name Hchinomuricea ceylonensis. 



The species must, however, be transferred to the genus Acamptogorgia, as it possesses 

 the radiate spicules with foliate expansions which are so typical of that genus. 



One colony reaches a height of 27 cm. and a breadth of 20 cm. ; another is 10 cm. broad 

 and high. Mr. Gardiner notes that the colonies when living were of a claret-red colour. 



This species bears a notable superficial resemblance in colour and habit to Muricella 

 purpurea, Whitelegge, which is generally found along with it, illustrating that super- 

 ticial convergence not infrequently met with in Alcyonarians. Similarly, Acamptogorgia 

 gracilis is very like Muricella rubra. 



Two dried colonies measure in centimetres 30 X 25 and 38 X 17. 



Localities, (a) Providence (D 11), 50 fms. ; {b) Salomon, 75 fms. ; (c) Salomon, 

 60-120 fms. 



Previously recorded from Periya Paar, Ceylon {Thompson and Henderson, 1905). 



25. Acamptogorgia gracilis, Thomson. (Plate 13. fig. 3.) 

 For description see : — 



Thomson: Appendix to Ceylon Pearl Oyster Report (1905), No. xxviii. p. 177, figs. 12 & 13. 

 In the present collection there is one specimen of this exceedingly beautiful form. 



