$66 



FOSSIL TURTLES OF NOKTH AMERICA. 



Plate 88. 



i. Conchochelys admirabilis. Skull of type, view from above, x yj. No. 6090 A. M. N. H. 



2. Conchochelys admirabilis. Same skull, seen from below. X ! /j. 



3. Conchochelys admirabilis. Same skull, seen from right side. X ]/]. 



4. Helopanoplia disiincta. Fragment of costal type, x 1. U. S. N. M. 



5. Helopanoplia distincta. Portion of plastral bone of type. X 1. U. S. N. M. 



6. Aspidcretes coalesccns. Fragment of costal. X 1. Shows the sculpture. From photo- 



graph furnished by L. M. Lambe. 

 7 Aspideretes splendidus. Portion of distal third of second costal of type. X 1. No. 3952 

 A. M. N. H. Shows character of sculpture. 



8. Aspidcretes splendidus. Portion of distal end of fourth costal of type. X 1. 



9. Aspideretes splendidus. Portion of proximal half of third costal. X 1. 



Plate 89. 



1. Aspideretes foveatus. Carapace. X 0.5. From photograph by L. M. Lambe. Specimen 



in coll. Geol. Surv. Canada. 



2. Aspideretes foveatus. Right hypoplastron. X 1. From drawing by L. M. Lambe. Speci- 



men in coll. Geol. Surv. Canada. 



Plate 90. 



1 Aspideretes coalesccns. Carapace. X 0.25. From photograph by L. M. Lambe. Speci- 

 men in coll. Geol. Surv. Canada. 

 2. Aspideretes beecheri. Carapace. X /}. No. 2358 U. S. N. M. 



Plate 91. 

 Aspidcretes splendidus. Carapace of type. X 0.28. No. 3952 A. M. N. H. 



Plate 92. 



1. Aspideretes beecheri. Carapace and part of neck, limbs and tail of type. X 0.25. Speci- 



men in Yale Univ. coll. Photograph by Wieland. 



2. Aspideretes beecheri. Plastron of type. X 0.25. Photograph by Wieland. 



Plate 93. 



1. Aspideretes sagatus. Carapace of type. X ]/ } . No. 1201 A. M. N. H. 



2. Aspideretes sagatus. Portions of neurals and costals, to show sculpture. X 1. From type. 



3. Aspideretes sagatus. Distal portion of a costal. X 1. From type. 



Plate 94. 



1 Aspideretes puercensis. Carapace of type. X 0.5. No. 1202 A. M. N. H. 



2. Aspideretes puercensis. Portion of first costal of type, taken near center. X 1. 



3. Aspideretes puercensis. Portion of proximal end of third costal of type. X 1. 



Plate 95. 



1. Aspideretes ellipticus. Carapace of type. X 0.4. No. 1117 A. M. N. H. 



2. Aspideretes ellipticus. Portion of fifth neural and of fifth and sixth costals of type. 



X 1. To show character of sculpture. 



3. Aspideretes ellipticus. Portion toward distal end of fifth costal of type. X 1. 



Plate 96. 



Aspideretes beecheri. Portions of two costals of type, to show sculpture. X 1. 

 Aspideretes beecheri Portion of costal to show sculpture. X 1. No. 2358 U. S. N. M. 

 3 Aspideretes vagans. Type fragment of costal. X 1. No. 1847 A. M. N. H. 



4. Amyda? halophila. Neural and part of costal of type. X 1. No. 1476 A. M. N. H. 



5. Amyda? halophila. Fragment of costal. X 1. No. 1476 A. M. N. H. 

 Amyda? pennata. Costal forming type. X 1. No. 1165 A. M. N. H. 

 Amyda? virginiana. Portion of costal of type. X 1. In coll. Maryland Geol. Surv. 

 Amyda? virginiana. Second portion of costal of type. X 1. In coll. Maryland Geol. Surv. 



