A. H. CLARK : THE CRINOIDS OF THE INDIAN OCEAN, 



261 



are slightly longer than broad, the articular faces having two ligament ioasse 

 separated by a strong transverse bar or ridge, just as I have shown them to be in 

 the very young stems of Isocrinus decorus ; the crown is similar to that figured 

 by Carpenter for very young Hypalocrmm tmresianus (T. c, pi. 30a, fig. 1); 

 there is the same production of the edges of the IBr series. 



Fig. S3- — Cotnastrocrimts liliaceus. 

 The stem. 



Genus HYPALOCRINUS. 



Hypalocrinus 1908. A. H. Clark, Proc. Biol. Soc. Washington, vol. 21, p. 152; 

 Proc. U. S. Nat. Mus., vol. 35, p. 120 (Pentacrinus naresianus P. H. 



Carpenter, 1882(1884)). 



