DESCRIPTIONS OF NEW SPECIES OF RECENT UNSTALKED 

 CRINOIDS FROM THE COASTS OF NORTHEASTERN 

 ASIA. 



By Austin Hobart Clark, 



Of the United States Bureau of Fisheries. 



In a previous paper ^' I published preliminary descriptions of new 

 species of unstalked crinoids l^elonging- to the genus Decametrocrinim 

 and the Elegans, Eschrichtii, and Tenella groups of the genus Antedon^ 

 from the collections made by the U. S. Fisheries steamer Alhatross in 

 the north Pacific and in the Japanese seas. In the present paper are 

 included the new species belonging to the Basicurva, Spinifera, and 

 Palmata groups of the genus Antedo7i., together with the bidistichate 

 representatives of the Acoela group (which are here referred to as 

 comprising the Multicolor group), the species lacking the pinnule of the 

 third brachial, a species in which the first pinnule is the longest, and 

 another species of the Elegans group. Three new species of Cornatula 

 are also described, and a species of Cornatula and another of Atele- 

 crhius are renamed. Attention is called to the varied and handsome 

 coloration of the Multicolor group in life, a group in which this feature 

 appears to attain its maximum so far as the Crinoidea are concerned. 

 A. ruhrojlava is very handsome, bright yellow, banded with equally 

 bright red, each color occup34ng areas about half an inch wide; this 

 is the onl}' species I have seen alive with this type of coloration; but 

 a specimen of A. .styllfer taken at Kagoshima in 1859 still shows evi- 

 dence of having been similarly colored, although the specimen of the 

 latter which I obtained is entirely different. The species described in 

 this paper will be described in more detail and figured later. The 

 keys preceding the descriptions are based on those of Dr. P. H. Car- 

 penter, so far as possible; but all the species described since the pub- 

 lication of the Challenger report have been taken into consideration, 

 and the characters of the new species here described are presented in 

 such a wa}^ that their relations to those previously known will, it is 

 hoped, be perfecth' clear. 



ffProc. U. S. Nat. Mus., XXXIII, pp. 69-84. 



Proceedings U. S. National Museum, Vol. XXXIII— No. 1 561 . 



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