MONOGRAPH OF THE EXISTING CRINOIDS. 



245 



Fig. 227. 



FiQ. 22S. 



Figs. 227-2iS.— 227, Lateral view of a specimen- of Atopocrin-us sidog^ from the East Ixdies, snowtxo tue basal rats, 



TIIE GREATLY REDUCED BA3ALS, AXD THE CONICAL CENTRODORSAL -mTU STRONG INTERRADIAL AND RADLVL RIDGES. 22S, 



Lateral ^•IEW of the centrodorsal of a specimen of I's.vtuykometra inusitata fro-m near the I'ostillon Islands, 



SHOWKG the CU.\.NGE IN TOE ARRANGEMENT OF TUE CIRRUS SOCKETS FROM ALTERNATING ROWS TO DEFINITE SEGREGATED 

 COLtJUNS. 



