PLATE XXXVI. 



PAGE 



Fig. 11. Undetermined. 276 



Fig. 12. Pholadomya Sonorensis. Slightly magnified. 265 



Fig. 13. Tapes Hilgardi. Natural size. 265 



Fig. 14. Cardium (Granocardium) sabulosum. Natural size. 267 



Fig. 15. Cardium (Protocardium) granuliferum. Natural size. 267 



Fig. 16. ? Cardita alticosta. Magnified. 268 



Fig. 17. Eemondia furcata. Natural size. 270 



17 a. Hinge of left valve. 



Fig. 18. Cucull^a inermis. Natural size. 271 



18 a. End view of same. 



Fig. 19. Exogyra plicata. Natural size. 275 



19 a. Edge view of same. 



