hay.] Two New Species of Fossil Turtle from Oregon. 241 



CLEMMYS SAXEA Sp. nOV. 



This species is founded on rather meagre materials, being 

 represented by two bones, the pygal marginal, and a posterior 

 peripheral. These bear the number 2192 of the museum of the 

 University of California. They were collected from the Mascall 

 beds, on Beaver Creek, near Crooked River, Oregon. 



The marginal pygal, taken as the type of the species, is 

 represented by figure 6. This presents a view of the bone seen 



from above and also as seen from 

 ] J the sutural edge; and therefore 

 T \ \ both the size and the thickness of 

 \ / the bone are indicated. It has 

 ^ an antero- posterior length of 18 

 mm. and a width of 22 mm. at 

 the anterior end and of about 10 mm. at the posterior end. The 

 greatest thickness is (i mm. On the superior surface the bone 

 is convex; on the inferior suaface it is concave. The sulci 

 bounding the dermal shields are deeply impressed. The one 

 between the last vertebral scute and the supracaudal scute lies 

 well down on the bone, as in C. guttata. In C. leprosa, according 

 to Dr. Bonlenger's figure, this salens lies on the penultimate 

 pygal bone. This bone is of rather peculiar form and will 

 doubtless be easily recognized when additional materials have 

 been discovered. 



The peripheral accompanying this pygal, the tenth of the 

 left side, resembles the one represented by figure 4, but is 

 smaller, and the horizontal sulcus has evidently run very close 

 to the upper border, as it does in the corresponding bone of 

 C. leprosa. Near the hinder end of the upper edge of the bone 

 is a deep pit for the end of a rib. 



