INDEX OF PLATES. 565 



PLATE 79. 



1. Testudo orthopygia. Carapace. X 0.4. Mostly from No. 2415, but partly from Nos. 3931 



and 2320 A. M. N. H. Represents young individuals called by Cope Xerobaies 

 cyclopygia. 



2. Testudo orthopygia. Plastron. X 0.4. Mostly from No. 2415, but partly from No. 3931 



A. M. N. H. Form called by Cope Xerobates cydopygia. 



PLATE 80. 



1. Testudo orthopygia. Shell, side view. X 0.4. Restored from same specimens as figures 



of Plate 79. 



2. Testudo gilberti. Skull of type, seen from above. X 0.75. From type in coll. Univ. Kansas. 



3. Testudo gilberti. Same skull seen from below. X 0.75. 



4. Testudo gilberti. Same skull, right side. X 0.75. 



5. Testudo gilberti. Lower jaw of same skull. X 0.75. 



PLATE 81. 

 Testudo orthopygia. Carapace. X 0.25. No. 6108 A. M. N. H. 



PLATE 82. 

 Testudo orthopygia. Plastron. X 0.25. No. 6108 A. M. N. H. 



PLATE 83. 

 FROM PHOTOGRAPHS FURNISHED BY CARNEGIE MUS., PITTSBURG. 



1. Testudo edte. Carapace of type. X 0.3. No. 1535 Carnegie Mus. 



2. Testudo edce. Plastron of type. X 0.3. 



PLATE 84. 

 FROM PHOTOGRAPHS FURNISHED BY CARNEGIE MUS., PITTSBURG. 



1. Testudo hollandi. Carapace of type. X ]/ 3 . No.is6i Carnegie Mus. 



2. Testudo hollandi. Plastron of type. X l /}. 



PLATE 85. 



1. Plastomenus costatus. Costal bone. Slightly reduced. No. 6131 A. M. N. H. 



2. Plastomenus costatus. Right xiphiplastron. Slightly reduced. No. 6131 A. M. N. H. 



3. Plastomenus molopinus. Carapace. X 0.6. No. 5941 A. M. N. H. 



PLATE 86. 

 REPRODUCTION OF FIGURES BY COPE. 



1. Plastomenus catenatus. Fragment of costal. X i. No. 1138 U. S. N. M. 



2. Plastomenus? leftomitus. Fragment of costal. X i. No. 1113 U. S. N. M. 



3. Plastomenus? lachrymalis. Fragment of costal. X i. a, view of edge of fragment. 



4. Plastomenus f fractus. Fragments of costals. X i. Types lost, w, x, the proximal 



end of a costal, showing both surfaces; y, z, fragments of two costals. 



5. Plastomenus corrugatus. Part of left hypoplastron. X i. Original lost. 



6. Plastomenus communis. Two peripherals. X i. a, seen from above; b, view of edge. 



Type. No. 1132 U.S. N.M. 



7. Plastomenus communis. Two peripherals of type. X i. 



8. Plastomenus communis. Fragment of hyoplastron of type. X i. 



9. Amyda cariosa. Neural. X i. Type. No. 2575 U. S. N. M. 



10. Amyda cariosa. Fragment of costal of type. X i. 



11. Amyda radula. Fragment of costal of type. X i. No. 2581 U. S. N. M. 



12. Amyda radula. Fragment of costal of type. X i. 



PLATE 87. 



1. Plastomenus vlsendus. Carapace. X 0.5. Type. No. 1895 A. M. N. H. 



2. Plastomenus visendus. Plastron of same specimen. X 0.5. 



