﻿PLATE IX. 



Figs. 1 — 5. Stacheia congesta, nov. (Pages 117, 110.) 



Figs. 1 — 4. Lateral aspect, showing the general external characters. 

 Fig. 5. Transparent longitudinal section. 



From Carboniferous specimens. All magnified 50 diameters. 



Figs. 6 — 8. Stacheia acervalis, Brady. (Pages 116, 110.) 

 Carboniferous. X 40 diam. 



Figs. 9 — 13. Stacheia polytrematoides, nov. (Pages 118, 110.) 



Fig. 9. Specimen growing round a fragment of a Polyzoon. X 30 diam. 

 Figs. 10 — 12. Specimens growing on the surface of Encrinites. X 20 diam. 

 Fig. 13. Transverse section showing the general structure and the arrange- 

 ment of the chambers. X 70 diam. 



