FOSSIL TURTLES OF NORTH AMERICA. 



The anterior nares do not appear to have been different from those of T. latiremis. As 

 seen in the type and the figures here presented, the quadrates have been squeezed forward 

 somewhat. The lower jaw is present, but is so closely prest against the roof of the mouth 

 that its alveolar surface can not be seen. So far as can be judged, it is not greatly different 

 from that of T. latiremis; but the symphysis is evidently shorter. It is very desirable that 

 this surface should be seen, in order to distinguish this species clearly from T. sernfer. 



In explanation of the figure, it should be said that the inner nares are hidden by some 

 fragments of bone, probably of the hyoids. 



The type was found in the Niobrara deposits of Gove County, Kansas. 



220. 



FIGS. 214-220. Toxochelys stenopora. Portions of type. 



214. Dentary portion of lower jaw. Xi. 



215. Left dentary, showing inner face. Xi. 



216. Section along symphysis of lower jaw. Xi. 



217. Upper aspect of skull. Xi. fr, frontal ; mx, 



maxilla ; pa, parietal ; pal, palatine ; pmx, 

 premaiilla ; prf, prefrontal ; ft, pterygoid . 



218. View of palatal surface of skull. Xi. 



219. Supraoccipital. Xi. 



220. Left hyoplastron, hypoplastron, and xiphiplastron 



of type. Xj. Redrawn from figure by Case. 



Toxochelys stenopora Hay. 

 Figs. 214220. 



Toxochelys serrifer, CASE, Univ. Geol. Surv. Kansas, iv, 1898, p. 379, plate Ixxx, figs. 3-9; plate Ixxxii, 

 figs. 4, 5; plate Ixxxiii, fig. I. HAY, Amer. Naturalist, xxxn, 1898, p. 935, figs. 1-3; Bibliog. and 

 Cat. Foss. Vert. N. A., 1902, p. 442, in part. WILLISTON, Trans. Kansas Acad. Sci., xvn, 1901, 

 p. 198. 



Toxochelys stenoporus, HAY, Bull. Amer. Mus. Nat. Hist., xxi, 1905, p. 180, figs. 8-12. 



The present writer is not able to agree with Dr. Case in his identification of the testudinate 

 remains belonging to the University of Kansas which he has described and figured as Tox- 

 ochelys serrifer. The type of Cope's T. serrifer belongs to the American Museum of Natural 

 History and was not accessible to Dr. Case when he was studying the fossil turtles of Kansas. 



Of the bones figured by Case, the skull (plate Ixxxii, figs. 4, 5), the marginals (fig. i, 

 plate Ixxxiii), and the hyoplastron (fig. 3, plate Ixxx), are markt with the number 2060; while 

 the elements furnishing fig. 4 of the last-named plate, and the neurals and suprapygal of fig. I, 



