MONOGRAPH OF THE EXISTING CRINOIDS. 



399 



828 



830 



FIGS. 824-830. SIDE AND COVERING PLATES OK MONACHOMETRA FUAGILIS (DRAWINGS BY AUTHOR). 824. Six 



CONSECUTIVE SIDE AND COVERING PLATES. 825. SAME. 826. SAME. 827. Six CONSECUTIVE SIDE PLATES 

 IN VENTRAL VIEW. 828. SIDE AND COVERING PLATE FROM BASE OF A PINNULE, SHOWING ROUNDED INCISION 

 INSTEAD OF PERFORATION. 829. INTEBIOR VIEW OF SIDE PLATE. 830. THREE COVERING PLATES VIEWED 

 FROM INTERIOR. ALL X 100. 



