PLATE XXXVI 



PAGE 



Fig. 1. SPH^ROCYSTITES GLOBULARIS Schuchert 247 



The entire stalk, terminating in the roots at one end, and at the other 

 preserving a few of the thecal plates, seen from the interior. 

 Helderberg formation, Keyser member, Devil's Backbone. 



Fig. 2. SPH^EROCYSTITES GLOBULARIS VAR. OVALIS Schuchert 248 



Specimen seen from the side. X 2. Helderberg formation, Keyser 

 member, Keyser, W. Va. 



Figs. 3-7. THYSANOCRINUS ETJGENIUS Ohern, n. sp 249 



3, 4. Side and inferior view of calyx. 



5. Side view of calyx showing bases of arms. 



6. Exterior view of an arm. 



7. Interior view of bases of arms. 



Oriskany formation, Ridgely member, Cumberland. 



Figs. 8, 9. TECHNOCRINUS STRIATUS (Hall) 250 



8. Plate belonging to this species. 



9. The basal plates anchylosed together with a small portion of the 



column attached, and also one first radial plate. 



Oriskany formation, Ridgely member, Cumberland. (After 

 Hall.) 



Figs. 10, 11. TECHNOCRINUS SCULPTUS Hall 250 



Basal and lateral view of the lower part of the body. Oriskany forma- 

 tion, Ridgely member, Cumberland. (After Hall.) 



