38 EMYSRUBRIVENTRIS. 



angle greatly elongated; all the other plates are regularly quadrilateral, those over 

 the thighs broadest; the posterior and external angle of the ninth projects slightly 

 beyond the tenth, which in turn extends beyond the eleventh, and the latter beyond 

 the twelfth. The projection of these angles gives the shell a slightly serrated 

 appearance. 



The sternum is oblong, entire in front, but emarginate behind. The gular plates 

 are triangular, with their apices turned backwards; the brachial are also triangu- 

 lar, with rounded bases externally, their apices truncate, and directed inwards; 

 the thoracic are quadrilateral; the abdominal broad and pentagonal; the femoral 

 are irregularly quadrilateral, with their narrowest border directed internally, 

 and their posterior and external borders projecting beyond the subcaudal plates, 

 which are triangular, with their bases rounded and directed backwards. Of 

 the supplemental plates, the femoral are trapezoid in shape, prolonged and pointed 

 anteriorly; the axillary are irregularly triangular and largest in front. 



The head is of moderate size, a little enlarged posteriorly, and slightly pointed 

 at the snout; the jaws are strong, the upper so deeply emarginate as to present the 

 appearance of having two teeth. The inferior is serrated at the sides, and has 

 three teeth in front, of which the middle or hook, is most prominent, as if made 

 to pass into the deep notch of the upper jaw. The eyes are large and prominent; 

 the pupil black; the iris pale golden, with a black band passing longitudinally 

 through it. 



The anterior extremities are rather long, and covered with transverse rows of 

 scales in front, and with scales and granulations behind; there are five fingers, 

 palmated with five short, slightly curved nails. The posterior extremities are round 

 at the thighs, but much flattened towards the tarsus; the toes are five, and fully 

 palmated, but only four of them are fiirnished with nails. The tail is short and 

 large at its base, but becomes suddenly pointed. 



Colour. The shell is dusky brown, marked with blotches or confluent spots. 



