TESTUDO PONDEEOSA. 
35 
Very few parts of the remainder of the skeleton have been preserved and extracted 
from the stuffed example. The ulna has a length of 150 millims. and a width of 
29 millims. in its narrowest part ; the radius a length of 145 millims. and a circum- 
ference of 67 millims., also measured in its narrowest part. Olecranon very prominent, 
the articular surface forming a steep decline towards that of the radius. Shaft of the 
radius subcylindrical in its middle. The arrangement of the carpal bones does not 
differ from that of T. elepliantina. The tibia is 137, the fibula 139 millims. long. 
3. TeSTUDO PONDEEOSA. 
Of this form I have seen one specimen only, the complete skeleton of a female in 
the British Museum (Plate VI.). It was bought some fifteen years ago by myself for 
the Zoological Society, in whose gardens it lived for a short time ; nothing could be 
ascertained at the time of its earlier history. 
A pelvis of a larger example in the British Museum is referred to this species on 
account of its complete resemblance to that of the first specimen. 
The carapace (Plate VI.) is very regularly shaped, a little wider behind than in 
front, with neither the anterior nor posterior margins reverted, and with shallow notches 
between the marginal plates. It is rather high, with the sides nearly perpendicular, 
and with the centre of each of the vertebral scutes raised. Nuchal excision very 
narrow. Fore part of the shell declivous from the hind part of the first vertebral scute. 
Caudal scute not reverted, but rather convex. Vertebral and sternal scutes almost 
entirely smooth, costals and marginals with broad flat concentric striation. Nuchal 
plate narrow, linear. 
'Sternum truncated in front, with a rectangular excision behind; the lateral edges of 
its front lobe are conspicuously convex along the whole extent of the postgular scutes. 
Carapace of a uniform dark horn-colour, nearly black. 
The bony substance of the carapace is of considerable thickness in every part, three 
fourths of an inch in a longitudinal section of the lateral portion of the sternum. 
The measurements of this specimen are as follows : — 
Length of carapace. Width of carapace. Depth of Sternum. Caudal plate. 
Instr. line. Over curve. Instr. line. Over curve. carapace. Length. Width. Length. Width, 
in. in. in. in. in. in. in. in. in. 
27i 36i 19 37 14i 22^ 17^ 2| 61 
Osteology. — The sJcull of this species (Plates VIII. & IX.) differs more from those of 
the preceding two species than these do from each other. It is particularly distin- 
guished by its relatively inconsiderable breadth and the shortness of the occipital crest. 
1. The frontal region is very convex and broad, its greatest width (in front of the post- 
frontals) being more than one half of the distance of the tympanic condyles (outside 
measure). 2. The upper surface of the parietals is a flat triangle, the outer edges of 
F 2 
