254 FREDERICK W. SARDESON 



Figs. 8, 9, lo. — Podolithus dicyclicus nom. nov., from the Galena stage. Fig. 8, 

 a well-preserved but unsymmetrical root; Fig. 9. part of surface of the same X2; 

 Fig. ID, a weathered specimen. 



Figs. II— 17. — Podolithus schizocrinus n. sp., from the Galena stage. Fig. 11, a 

 small root on a coral X2; Fig. 12, vertical section of a similar one X2; Fig. 13, 

 vertical median section X2, of a specimen which has overlapped the supporting coral; 

 Fig. 14, section of same X2, not median; Fig. 15, diagram of upper surface of iixing- 

 plate with ridges; Figs. 16, 17, top and side views of a large specimen which has 

 surrounded its attachment. 



Figs. 18, 19. — Podolithus ano?nalocrinus n. sp. Side and top view of root and 

 part of column; from the Galena stage. 



Figs. 20-23. — Podolithus eucheirocrinus n. sp., from the Galena stage. Figs. 20, 

 21, views of a large lobate root surrounding a Crinoidal column; Fig. 22, part of sur- 

 face of same X2; Fig. 23 a small specimen. 



Figs. 24, 25. — Podolithus dendrocrinus n. sp., from the Galena stage. Fig. 24, 

 side view of root with long rounded lobes, and of stem-scar of same; Fig. 25, section 

 X4, across three lobes, a, b, c, of another specimen. 



Fig. 26. — End of a round column X2, showing lumen and canals; corresponding 

 to Fig. 24. 



Figs. 27-31. — Diagrammatic sections, Fig. 27, of Podolithus; Fig. 28 of same with 

 margins turned under; Figs. 29, 30, hypothetical modifications; Fig. 31, of Camaro- 

 crinus; /, fixing plate; 0, "medio-basal" cavity; r, radicle; i, interradicle contours; 

 c, pockets or camerae. 



