PLATE 66. 



NucleospLa cf. ventricosa (Hall) 

 Page 249. 



Figs. 1, 2. Views of two brachial valves showing the narrow sinus. 

 Fig. 3. View of an incomplete brachial valve. 



Meristella elliptica sp. nov. 

 Page 250. 



Figs. 4, 5. Views of two pedicle valves. 



Meristella ovalis sp. nov. 

 Page 250. 



Figs. 6-8. Views of three brachial valves. 



Meristella ampla sp. nov. 

 Page 249. 



Figs. 9, 10. Views of two pedicle valves. 



Fig. 11. View of the internal mould of a pedicle valve showing the muscular scais. 



Meristella carinata sp. nov. 

 Page 250. 



Figs. 12-14. Brachial views of three individuals. 



Figs. 15-16. Posterior views of two nearly compbte spsci n^n?. 



Fig. 17. View of a pedicle valve. 



Fig. 18. View of the internal mould of a pedicle valve showing the muscle scars. 



Fig. 19. Brachial view of a young specimen doubtfully referred to this species. (X 4). 



Figs. 20, 21. Pedicle valves doubtfully referred to this species 



Anoplotheca dichotoma (Hall) 

 Page 251. 



Figs. 22, 23. Views of two pedicle valves. 

 Figs. 24, 25. Views of two brachial valves. 



Anoplotheca flabellites (Conrad) 

 Page 251. 

 Fig. 26. View of a brachial valve. 

 Fig. 27. View of a pedicle valve. 



