378 University of Kansas Geological Survey. 



Tl}e distal end is nearly as broad as the proximal, but this may 

 be largely due to post-mortem compression. Plate lxxxi, fig- 

 ures 1,2. 



The tibia and fibula are unknown. 



The hind foot is represented by an incomplete specimen. The 

 first digit was shorter than the others, and terminated in a 

 strong claw. There were four phalanges, all short and strong. 

 The first one, longer than the others, had slightly expanded 

 proximal and distal ends and strong articular faces, for the tar- 

 sus and the succeeding phalanx. The next two phalanges are 

 shorter than the first, and have a pit for muscular attachment 

 on each side of the distal extremity. They are flattened on the 

 posterior side and convex on the anterior. The terminal claw 

 is strong and much curved. The phalanges of the remaining 

 digits are longer and more slender. The terminal one is not 

 developed into a claw, but is long and slender, and thin at the 

 extremity. In all probability it did not penetrate the skin of 

 the foot. 



Certain bones of the tarsus are preserved, but are so badly 

 crushed that their true shape and position cannot be determined. 



Toxoclielys bracliyrliiuus, sp. nov. 



A nearly complete skull seems to indicate an undescribed spe- 

 cies. The individual bones are very similar to those described 

 as T. latiremis, but the proportions of the whole skull are so 

 very different that one is warranted in considering it as the 

 representative of a yet undescribed species. Instead of the 

 broad posterior end rapidly contracting anteriorly, the sides are 

 much more nearly parallel, and the anterior end, instead of 

 terminating in a sharp nose, with much divergent maxillaries, 

 is so blunt as to give an almost square appearance. The quad- 

 rates are nearly equal in height to those of a specimen of T. 

 lati remix, though the skull is shorter and much narrower. The 

 upper surface of the roofing bones show a strong sculpture of 

 deep pits and rugose lines, not observed in the specimens of 

 other species. An upper view of the skull is shown in plate 



LXXXIV. 



