PLATE LXXI. 



Page 



Plattceinus incomptus White Cti-i 



Fig. 1. A very large specimen, showing the numerous ramifications of the arms. 

 (Coll. W. and Sp.) 



2. A small specimen, showing the same. (Same collection.) 



3. The type specimen. (Mus. Comp. Zool.) 



Platyceinus ^qualis Hall 674 



4(1. A very large specimen with arms. (Same collection.) 

 ib. Portion of an arm (enlarged). 



5. The calyx, showing the radial facets and the small first costal. (Coll. W. 



and Sp.) 



Plattcrixus lodensis Hall and Whitf GCO 



6. The type specimen. (After Hall and Whitfield.) 



Platyceixus geaphicus Hall and Whitf G7:.' 



7. The type specimen. (After Hall and Whitfield.) 



Platyceixus coxteitus Hall and Whitf 607 



8. The type specimen. (After Hall and Whitfield.) 



Platyceixus xiotexsis Meek and Worthen CS2 



9. Specimen with arms (from Indiana). 



Platyceixus Beittsi S. A. Miller 659 



10. The type specimen. (Coll. F. A. Sampson, Sedalia). 



Platyceixus coebulifoemis Eowley and Hare 657 



lln. Dorsal cup in a side view. 



lib. Dorsal aspect of the same specimen. (Coll. E. E. Eowley.) 



Platyceixus .^quiteexus S. A. IMiller 658 



12. The type specimen. (Coll. F. A. Sampson.) 



Platyceixus pisum Eowley and Hare 6G0 



Ion. The type specimen ; posterior view. (Coll. E. E. Eowley.) 

 13b. Dorsal aspect of same. 



