558 



FOSSIL TURTLES OF NORTH AMERICA. 



PLATE 8. 



1. Bacna callosa. Plastron of type. X 0.6. No. 330 Carnegie Mus. 



2. Baena marshi. Plastron of type. X 0.47. Yale Univ. coll. 



PLATE 9. 



Bacna hatchcri. Carapace of type. X 4/9. In Carnegie Mus. (On the plate the size 

 is wrongly given as 4/7.) 



PLATE 10. 



Bacna hatchcri. Plastron of type. X 0.4. In Carnegie Mus. (On the plate the size 



is wrongly given as J^.) 



PLATE n. 



1. Baena cscavada. Carapace of type. X J/j. No. 1203 A. M. N. H. 



2. Bacna escavada. Plastron of type. X ]/$. 



PLATE 12. 

 i. Baena arenosa. Carapace. X 0.5. No. 5973 A. M. N. H. 



PLATE 13. 



1. Bacna arenosa. Plastron of type. X 0.55. No. 5973 A. M. N. H. 



2. Bacna sima. Skull, upper view. X i. No. 5971 A. M. N. H. 



3. Bacna sima. Same skull, lower view. X i. 



PLATE 14. 



1. Bacna arenosa. Part of skull, upper side. X i. No. 5973 A. M. N. H. 



2. Bacna arenosa. Same skull, right side. X i. 



3. Bacna arenosa. Same skull, lower side. X i. 



4. Bacna sima. Skull of type, from right side. X I. No. 5971 A. M. N. H. 



5. Bacna sima. Lower jaw of same individual, from above. X i. 



6. Baena sima. Same jaw, left side. X i. 



PLATE 15. 

 Bacna sima. Carapace of paratype. X 0.5. No. 5965 A. M. N. H. 



PLATE 16. 



1. Bacna clara. Carapace of type. X 0.4. No. 6075 A. M. N. H. 



2. Bacna clara. Plastron of type. X 0.4. 



PLATE 17. 

 Bacna riparia. Skeleton of type viewed from above. X 0.4. No. 5977 A. M. N. H. 



PLATE 18. 



Bacna riparia. Skeleton viewed from below, with part of plastron removed. X 0.4. 

 No. 5977 A. M. N. H. 



PLATE 19. 



1. Bacna riparia. Skull of type, upper side. X i. No. 5977 A. M. N. H. 



2. Bacna riparia. Same skull, lower side. X i. 



3. Bacna riparia. Lower jaw of same skull. X I. 



4. Eubacna ccphalica. Skull forming type. X I. No. 3110 Yale Univ. coll. 



5. Tcstudo t'aya. Part of carapace, X 0.5. No. 1326 A. M. N. H. 



6. Tcstudo orthopygia. Plastron of cotype of Xerobates cyclopygia. Cope. X 0.2. No. 1323 



A. M. N. H. 



7. Tcstudo orthopynia. Carapace of cotype of Xerobates cyclopyrjia. X 0.2. No. 1323 



A. M.'N. H. 



