A. H. CLARK : THE CRINOinS OF THE INDIAN OCEAN. 279 



believe that the species should be referred to the genus Bathycrinus and be placed 

 near the species jnradoxus and recuperatns. 



Genus RHIZOCRINUS. 



Rhizocrhms 1864. M. Sars, Forhandl. Vidensk. Selsk., 1864, p. 127 (Rhizo- 

 crinus lofotensis, sp. nov.). 



RHIZOCRINUS WEBERI. 

 ? Rhyzocrinus 1886. Koeotneff, Bull, de I'Acad. roy. de Belgique, (3), vol. 12, 



p. 558. 

 Ehizocrinus weberi 1907. Doderlein, Die gestielten Oinoiden der Siboga-Expe- 



dition, p. 15, pi. i, figs. 6-11; pi. ii, figs. 3-5; pi. vi, figs. 7-11; pi. vii, 



figs. 1-4; pi. viii, figs. 1-4; fig. 5a, b, p. 14. 



Habitat.— Sulu (Jolo) Archipelago; Timor; Ceram Laut. 



Depth.— 112-2050 meters. 



RHIZOCRINUS CHUNI. 

 Rhizocrinus sp. nov. 1900. Doderlein, in Chun, Aus den Tiefen des Welt- 



meeres, p. 487, fig., p. 488. 

 Rhizocrinus chum 1907. Doderlein, Die gestielten Crinoiden der Siboga. 



Expedition, p. 14, pi. i, fig. 5 ; pi. vi, fig. 6 ; fig. 6, p. 14. 



Habitat. — Coast of Somaliland. East Africa. 



Depth. — 1644-1668 meters. 



LIST OF UNIDENTIFIABLE SPECIES AND OF INDEFINITE 

 REFERENCES. 



CAPUT-MEDUSiE CINEREUM. 



Cajmt-Mediisce cinereum 1733. Linck, De Stellis Marinis, pi. xxi, fig. 33; copied 



in BRTJGifeRE, Encyclopedic methodique, pi. cxxv, figs. 1, 2 (1792). 



Professor Johannes Miiller has identified this figure with his Alecto palmata, 

 and it is quite possible that he is correct in so doing ; at any rate it is a species 

 of the genus DIchrometra. Linnaus cites it in the synonymy of his Astenas multi- 

 radiata. 



CAPUT-MEDUS^ BRUNNUM. 

 Capiit-Medusce brunnum 1733. Linck, De Stellis Marinis, pi. xxii, fig. 34 ; copied 



in BRUGiteRE. Encyclopedie methodique, pi. cxxv, fig. 3 (1792). 



Dr P H Carpenter has suggested that this figure represents a species of the 

 Comasterida^, and this conclusion is undoubtedly justified. One might even go 



