PLATE LXVII. 



Page 

 rLATYCEiisi-s Saffoedi Hall 694 



Fig. 1. A fine specimeu with arms and column, from Indian Creek, Ind. (Coll. 

 W. and Sp.) 



2. Side view of the calj-x. (Same collection.) 



3. Dorsal cup of a specimen from Burlington. (Same collection.) 



Platyceinus glyptus M. and W 693 



4. Specimen with arms and column. (Coll. W. and Sp.) 



r>. Dorsal cup of a large, elongate specimen. (Same collection.) 



Platyckikus incomptus White 664 



6. A young specimen with arms, showing the numerous bifurcations of the rays, 



and a faint rugose ornamentation. 



Platyceixus spixifee, var. eloxgatus "W. and Sp 709 



7. Lateral view of the calyx, showing portions of the arms. (Same collection.) 



Platycrixu-s cavus Hall 715 



8(( and h. Dorsal cup of two specimens. (Same collection.) 



Platyceixus Worthexi Hall 702 



9. The type specimen. (Illinois State collection.) 



Platyceixus geometricus W. and Sp 697 



10. The type specimeu. (Mus. Comp. Zool.) 



Platycrixcs truncatulus Hall 673 



11". Side view of the calyx, showing the bases of the arms (enlarged). 

 11/;. Side view of another sijecimen. 



