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Plattcrinus asper ^r. and AV 690 



Fig. 9a. The type specimeu. (Mus. Coiiip. Zool.) 



91). Basal view of another specimen. (Mus. Comp. Zool.) 



Platycrinus orxigranulus McCh 701 



lOrt. A fine specimen with arms, representing the typical form. (JIus. Comp. 



Zool.) 

 10b. Dorsal aspect of a very short calyx ; showing the ornamentation. (Coll. 



W. and Sp.) 

 10c. A costal and two pairs of distichals. 



11a. A si^ecimen with coarser ornamentation. (Same collection.) 

 Hi. A specimen with a somewhat different ornamentatiou. (Same collection.) 

 12a. A young specimen. (Coll. W. and Sp.) 

 121). A still smaller specimen (Y). (Same collection.) 



Platycrixus eminulus Hall 712 



13'f. Anterior view of calyx. (Mus. Comp. Zool.) 



13//. Posterior view of another specimen. (Same collection.) 



13c. Ventral aspect of the calyx. (Coll. W. and Sp.) 



Platycrinus scobina M. and W. . . 695 



11a. The type specimen. (Mus. Comp. Zool.) 



HI). Dorsal aspect of the calyx. (Coll. W. and Sp.) 



Platycrinus Gorbyi S. A. Miller 716 



15. Dorsal aspect of the calyx. (Mus. Comp. Zool.) 



