122 Bulletin VanderbUt Marine Museum, Vol. VII 



651. For complete diagnosis of this exquisite crinoid, consult Dr. 

 Austin H. Clark's exhaustive monograph. 



References : Comanthu^ samoana, Clark, A. H., Bull. LXXXII, 

 U. S. Nat. Mus., 1915, Vol. I, pt. I, p. 46, p. 49; ibid., pt. II, 

 1921, pp. 149, 236, 257, figs. 428-429, pp. 278, 292, 327, figs. 

 649-651, pp. 594, 597, 709; ibid., 1931, pp. 411, 529, 531, 593, 

 599, 601, 602, 628, 639, 640, 648, 649, 658, 662, 677, 679, 681, 

 682, pi. 78, fig. 208, pi. 81, figs. 219-220. 



Family: HIMEROMETRIDAE 



Genus: AMPHIMETRA A. H. Clark 

 Amphimetra ensifer (A. H. Clark) 



*■ 



Plates 40 and 41 



Type : The type of this species was collected at Singapore and 

 is deposited in the University of Copenhagen Museum. 



Distribution: Singapore (Clark), Anambas Islands, South 

 China Sea (Boone). 



Material examined : Three specimens, taken on coral bottom, 

 in 33 fathoms, 3.2 miles S.S.E. of Pulo Telaga Island, Anambas 

 Islands, South China Sea, February 6, 1929, by the "Ara." 



Colour : Mr. Vanderbilt's field note records these living sea- 

 lilies as brov^^n with yellow markings. Under the miscroscope, the 

 specimens, now preserved nine years in alcohol, show the disk and 

 pinnae as deep purplish brown, the arms and cirri a deep ivory 

 yellow. The apical spines of the pinnae show as crystalline hooks. 



Discussion: The three Anambas Islands specimens appear 

 to be the second catch of this unusual crinoid, hitherto known only 

 from the type, a unique taken at Singapore and deposited in the 

 Copenhagen University Museum. The fact that Amphimetra 

 ensifer (A. H. Clark) was not taken by the extensive marine 

 surveys of H.M.S. "Challenger," the United States Bureau of 

 Fisheries Steamer "Albatross" surveys off the coasts of Japan and 

 in Philippine waters, the Royal Indian Marine Survey Steamer 

 "Investigator" nor the Nederlandsch Oost-Indie Siboga-Expeditie, 

 all of which magnificent collections of Crinoidea have been studied 

 by Mr. Austin H. Clark, in his classical monographs, serves to 



