MONOGRAPH OF THE EXISTING CRINOIDS. 



371 



Fig. 503. 



Fio. 504. 



FlO. 505. 



riG. .W6. 



Fio. 508. 



Figs. 503-50S.— 503, Dorsal view of the badul pentagos of a specimen of Perometra diomedE;E from soutdern Japan. 

 504, Dorsal \iew of the radial pentagon of a specuien of Erytiirometra ruber from southern Japan. 505, Dorsal 



\TEW OF THE RADUL PENTAGON OF A SPEOMEN OF I'ROMACHOCHINUS KERGUELENSIS FROM KERGUELEN LSLAND (AFTER 



P. H. Carpenter). 506, Dorsal mew of the radial pentagon of a specimen of Solanometra Antarctica from the 

 Antarctic (after P. H. Carpenter). 507, Dorsal view of the radul pentagon of a speomen of Ueuometra cla- 

 ciAus (after P. H. Carpenter). 508, Dorsal view of the radul pentaoon of a specimen of Flobouetba asperriua 

 FROM Alaska. 



