98 



Plastron equally broad in front and behind, its breadtli being 

 but little less than half its length measured along the median 

 line from the origin of the suture between the gular plates to 

 the end of that between the anals ; rounded in front and with 

 a deep seini-ovate notch behind. Intragular plate moderate, 

 octagonal, the hinder edges being distinctly though very 

 obtusely angulated ; posterior angle very acute : gular plates 

 quadrilateral, the sutural edge very short, about one-third of 

 the hinder edge, which is one-half of the length of the plate : 

 humerals with the outer and hinder edges produced backwards, 

 and meeting at an acute angle ; hinder edge concave : pectorals 

 large, pentagonal, the sutural edge about two-thirds of the 

 length of the intragular plate, and rather less than the outer 

 edge of the humeral plate : abdominal plates rectangular, 

 one-flfth broader tban long : femoral plates quadrilateral, the 

 sutural edge half as long as the breadth, and but little less than 

 the external edge, which is convex and laterally expanded, 

 but not to so great an extent as the corresponding eighth and 

 ninth marginal plates of the carapace ; anal plates quadrilateral, 

 the anterior edge straight and longer than the exterior, which 

 with the posterior forms a very acute angle ; these plates are 

 bent strongly upwards towards the carapace, the distance 

 between their tips being much greater than that between a 

 tip and the nearest point of the carapace. Colors — Carapace 

 rich dark brown with a reddish tinge on the sides ; plastron, 

 bridge, and lower surface of marginal plates pale yellow, the 

 sutures with a light brown edging. 



Measubements. 



Inches. 



Length of carapace ... ... ... ... 10-00 



Greatest width at last margino-lateral plate... 7 •25 



Depth below middle of second vertebral plate. . . o-80 



Length of nuchal plate... ... ... ... 0-75 



Width of same in front... ... ... ... 0-58 



Length of outer edge of 1st marginal plate... l-lo 



„ „ 2nd „ ... l-;3o 



„ „ 3rd „ ... 1-15 



4th „ ... 1-33 



„ „ 5th „ ... 1-05 



6th „ ... 0-95 



7th „ ... 1-10 



8th „ ... 1-00 



9th „ ... 105 



10th „ ... MO 



nth „ ... 1-05 



„ „ each caudal plate ... 1"10 



