448 



FOSSIL TURTLES OF NORTH AMERICA. 



of which would belong to cyclopygia, is that of the type of T. orthopygia. In one specimen of 

 " cyclopygia," a young individual, there is a broad longitudinal groove running along the under 

 side of the lip, and another on the upper side. This specimen and others of similar size appear 

 to indicate that usually during growth the upper groove disappeared and this surface of the lip 

 became roof-shaped. The lip of No. 1325, which has been described and figured, deviates 

 most from the typical form and under other circumstances might possibly be regarded as 

 belonging to a distinct species. 



Fig. 605 is a diagram of the carapace made up from the various specimens in the Cope 

 collection, of fossil reptiles, now in the American Museum of Natural History. 



Plate 79, figs, i, 2 and plate 80, fig. i, present views of this species seen from above, below, 

 and from the right side. The plastral view is taken almost wholly from No. 2415, A. M. N. H., 

 except the tip of the anterior lip and the border of the carapace in front of the axillary notch. 

 These parts are furnisht by No. 3931, an individual of the same size. The other figures have 

 been taken mostly from No. 2415, but those parts in front of an irregular line extending from 

 the front of the third neural forward and outward to the free border a little in front of the 

 axillary notch are taken from Nos. 3931 and 2320. The tip of the plastral lip is completed from 

 No. 3931. These figures reveal the great height of the peripheral bones. 



607. 



608. 



FIGS. 607 AND 608. Testudo sp. indet. Pelvis and femur. Xi- No. 2416 A. M. N. H. 



607. Pelvis showing slender lateral pubic process. 



608. Right femur. 



Judging from the numbers of this species in the Cope collection, it must have been very 

 abundant. Another and quite perfect specimen is in the museum of the University of Kansas. 

 Fig. 606 represents an ilium of No. 2426 of the American Museum of Natural History. It is 

 that of the right side. 



Plates 8 1 and 82 are reproduced from photographs of a large specimen of this species 

 which belongs to the American Museum of Natural History. It has the catalog number 6108. 

 This, with several other fine specimens, was collected in the year 1905, by Mr. Charles H. 

 Sternberg, in the typical locality, Decatur County, Kansas. The specimen figured has the 

 shell complete, with the exception of the third, fifth and sixth costal plates. The length from 

 the anterior end of the plastron to the hinder border of the carapace is 710 mm. The plastron 

 projects beyond the anterior border of the carapace 80 mm. The width of the carapace is 520 

 mm. The height is about 330 mm. 



The plastron is 622 mm. long. The epiplastral lip is nearly flat below, roof-shaped above. 

 The thickening on the upper surface continues backward 113 mm. Here the thickness is 



