54 E M Y S M O B I L E N S I S . 



gular plates are triangular, with rounded bases, and their external and anterior 

 angles projecting; the brachial are quadrilateral, the smallest border directed 

 inwards; the thoracic are quadrilateral, and elongated transversely; the abdominal 

 are broad and hexagonal, narrowest externally; the femoral are quadrilateral, 

 with the shortest border directed internally; the subcaudal plates are rhomboidal, 

 the anterior angle prolonged. Of the supplementary plates, the axillary are 

 irregularly quadrilateral; the anterior angle elongated and pointed; the femoral 

 is also quadrilateral, broadest anteriorly, with the anterior and external angle 

 greatly prolonged. 



The head is rather large, the snout pointed. The eyes are of moderate size; 

 the pupil black; the iris reticulated, with black and yellow lines. The upper jaw 

 is serrated throughout its whole extent, as well as the lower, which is furnished 

 with a hook. 



The anterior extremities are strong, covered with large scales in front, and 

 scales and granulations behind; there are five fingers, palmated, and furnished 

 each with a short, strong, nearly straight nail. The posterior extremities are 

 long, round at the thigh, much flattened at the tarsus; the toes are five, palmated, 

 but four only are furnished with nails. The tail is short, thick at the root, but 

 soon becomes small and pointed. 



Colour. The vertebral and lateral plates are brown, reticulated with yellow 

 lines. The marginal plates are likewise brown, with each a yellow line, which 

 begins at the centre of the inferior margin, and runs to the middle of the plate, 

 where it bifurcates; one portion runs forward, and the other backward, and as 

 the lines of the neighbouring plates meet, the margin has the appearance of being 

 festooned. 



The sternum is yellow, as well as the inferior surface of the marginal plates; 

 each of these is marked by a large black blotch, at its junction with the neigh- 

 bouring plate; in the centre of each blotch is a yellow spot, with two concentric 



