PLATE 63. 



Eatonia plicata sp. nov. 

 Page 238. 



Figs. 1-3. Pedicle views of three individuals. 

 Fig. 4. Brachial view of an imperfect valve. 



Anoplia nucleate, (Hall) 

 Page 236. 



Fig. 5. Internal mould of a pedicle valve. (X 1.5) 



Chonostrophia complanata (Hall) 

 Page 237. 



Fig. 6. Exterior view of a pedicle valve. 



Fig. 7. Interior view of a pedicle valve showing muscle scars and pustulose character 

 of the surface. 



Uncinulus salinensis sp. nov. 

 Page 239. 



Figs. 8-9. Pedicle and brachial views of a nearly complete specimen, the holotype. 

 Fig. 10. Cast of the interior of a pedicle valve. 



Uncinulus parvus sp. nov. 

 Page 239. 



Figs. 11-12. Brachial and pedicle views of the holotype. 



Uncinulus welleri sp. nov. 

 Page 240. 



Fig. 13. Exterior view of a pedicle valve. 

 Fig. 14. Exterior view of a brachial valve. 



Plethorhyncha barrandii (Hall) 

 Page 240. 



Fig. 15. View of the exterior of a pedicle valve. 

 Fig. 16. Exterior view of a brachial valve. 



