DESCRIPTIONS OF SEVENTEEN NEW SPECIES OF 

 RECENT CRINOIDS. 



By Austin Hobart Clark, 

 Collaborator, Division of Marine Innrtrhratcn, U. 8. National Museum. 



The authorities of the Indian Museum, Calcutta, have recently 

 done me the honor of intrusting to me for study the very important 

 collections of recent crinoids brought together by the steamer I nves- 

 tigator during the course of her work in the Indian Ocean. Many 

 of the new species are represented by a considerable number of speci- 

 mens, and of these cotypes have been retained and deposited in the 

 U. S. National Museum. The types themselves are in the Indian 

 Museum. The completed report on the collection will l)e published 

 as one of the series of hivestigafor monographs. 



I wish here to record my appreciation of the kindness shown me 

 by the authorities of the Indian Museum through the superintendent. 

 Dr. N. Annandale, and by Dr. F. A. Bather, at whose suggestion the 

 collections were sent to me. 



Family ZYGOMETRTD.^. 



Genus EUDIOCRINUS P. H. Carpenter. 



EUDIOCRINUS ORNATUS, new species. 



Centro-dorsal a thin disk, the bare polar area flat, 2.5 mm, in diam- 

 eter, the cirri arranged in a single marginal row. 



Cirri XVIII, 17-18, 10 mm. long; first joint twice as broad as long, 

 second nearly or quite as long as broad, third to fifth twice as long 

 as the proximal diameter, sixth slightly shorter, a more or less marked 

 transition joint; following joints gradually decreasing in length, the 

 terminal joints being only slightly longer than broad; penultimate 

 joint about as long as broad. The third to the sixth joints are very 

 strongly " dice-box shaped," with the distal edge all around produced, 

 except on the dorsal side; from the seventh onward both these fea- 

 tures become less marked, and the cirrus becomes somewhat com- 



Proceedinqs U. S. National Museum, Vol. XXXVI— No. 1 691 . 



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