Vol. XXII, pp. 143-152 June 25, 1909 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW RECENT INDIAN CRINOIDS. 

 BY AUSTIN HOBART CLARK.* 



A second collection of recent crinoids received for study from 

 the Indian Mnsenm, consisting mostly of specimens taken in 

 deep water, includes a rather large number of exceedingly 

 interesting new forms, of which it appears advisable to publish 

 preliminary diagnoses. Among the manj^ important discoveries 

 n)ade by the Investigator, none is more gratifying than the find- 

 ing of Bathyrrinus in the Indian Ocean; of the two forms 

 obtained, one, the largest recent species belonging to the family 

 Bourgueticrinidse yet known, is related to a species previously 

 dredged only in the far eastern tropical Pacific, while the other 

 resembles most closely the remarkable form from the eastern 

 Atlantic described by Professor Perrier as Ilyocrinns recuperatus, 

 a species so peculiar that he was inclined to regard it as a possi- 

 ble monstrosity; these are both so similar to the aberrant 

 Apiocrinus recubariensis of Crema (referred by Dr. Bather to 

 Millericrinus) as to suggest that that species should best 

 be referred to Bafhj/crinus. 



The species diagnosed herein will be fully described and 

 figured in one of the series of monographs published by the 

 Indian Museum dealing with the fauna of the Indian Ocean. 



Family C(3MASTERID^. 



Oeni s COI^rATrLA Lamarck. 



Comatula micraster sp. nov. 



Type.— Cat. No. Z. E. V. U-^, Indian Museum; Andaman I^ilands; 60 

 fathoms. 



Centro-dorsal rounded-pentagonal, flush with, or very sHghtly raised 

 above, the dorsal surface of the radials, without cirri. 



• Published with the permission of the Superintendent of the Indian Museum, Cal- 

 cutta; cf. antea, pp. 75-86; also Proc. U. S. Nat. Mus., Vol. xxxvi, pp. 033-651. 

 22— Pkoc. Biol. Soc. Wash.. Vol. XXII, 1909. (143) 



