PLATE 49 



Eatonia singidaris (Vanuxem) 

 Page 192. 



Figs. 1, 2. Ventral and anterior views of the single specimen. 



Uncinulus nucleolatus (Hall) 

 , Page 193.- 



Figs, 3, 4. Anterior and dorsal views. 



Fig. 5. Dorsal view of a specimen with 5 plications on the fold. 



Figs. 6-11. Side and anterior views of three specimens. 



Figs. 12-14. Anterior, dorsal, and side views. 



Fig. 15. Posterior view. 



Fig. 16. Posterior view of a portion of a shell. 



Uncinulus mutabilis (Hall) 

 Page 193. 



Figs. 17-19. Dorsal, side, and anterior views. 

 Fig. 20. An incomplete ventral valve. 

 Fig. 21. Side view. 

 Fig. 22. Dorsal view. 



Uncinulus subpyramidatus n. sp. 

 Page 194. 



Figs. 23-30. Dorsal, anterior, side, and ventral views of two incomplete shells. 

 Figs. 31, 32. Dorsal and anterior views. 

 Fig. 33. Anterior view. 

 Fig. 34. Dorsal view. 



Wilsonia wadei Dunbar 

 Page 195. 



Figs. 35-46. Ventral, dorsal, side, and anterior views of three specimens. 

 Figs. 47-48. Interior of incomplete ventral valves. 



