On the Skull of Xerobates (2) undata Cope. 
Contributions from the Paleontological Laboratory, No. 32. 
BY J.. Z. GILBERT: 
In the University of Kansas Museum there are a number of 
specimens of turtles collected from the Loup Fork Beds of Phillips 
Co, Kansas, by Messrs. Sternberg, West and Overton. This 
material has been entrusted to me by Dr. Williston, under whose 
advice and direction I have thoroughly studied it, with the result 
that two well-defined species have been made out, the detailed 
description of which will be given in a later paper. A_ well- 
preserved and nearly complete skuli of one of the species is of so 
much importance that it has been thought worth while to give here 
a preliminary description of it in advance of the fuller paper, 
fig. 1—Skull of Xerobates undata Cope, from above; natural size. 
(143) KAN. UNIV. QUAR., VOL. VII. NO. 3, JULY, 1898, SERIES A. 
