DR. A. GUNTHER ON GIGANTIC LAND-TORTOISES. 
281 
Carpus. — The coalescence of the scaphoid and intermedium, and of the two radial 
ossicles of the third series, which we have found complete in T. elephantopus, has 
commenced in the present individual, but the lines of separation are still clearly 
visible. 
The pelvis differs from that of T. elephantopus in the same manner as does that of T. 
ephippium, but its horizontal diameter is comparatively greater than in either of those 
two species. All the sutures are present. 
T. elephantopus, 
T. ephippium, 
T. vicina. 
790 millims. long. 
840 millims. long. 
840 millims. long. 
millims. 
millims. 
millims. 
Longest inner vertical diameter of pelvis . 
170 
160 
157 
Longest inner horizontal diameter of pelvis . 
132 
118 
144 
Shortest inner horizontal diameter of pelvis . 
112 
97 
97 
Longest diameter of foramen obturatorium . 
42 
42 
38 
Width of symphyseal bridge 
26 
35 
41 
Depth of symphyseal bridge 
26 
23 
26 
Least breadth of posterior portion of ossa) 
ischii j 
61 
80 
76 
Length of os ilii 
140 
130 
134 
Least breadth of os ilii 
30 
27 
29 
The femur agrees nearly entirely with that of T. elephantopus, thus differing from that 
of T. ephippium in the same points which have been indicated in the description of the 
latter species. The bones of the lower leg and carpus do not show any noteworthy 
peculiarity, the state of coalescence of the astragalus and calcaneum being the same as 
in some of the carpal bones mentioned above. 
Length of the femur 
T. elephantopus, 
790 millims. long, 
millims. 
. . . 169 
T. ephippium, 
840 millims. long, 
millims. 
186 
T. vicina, 
840 millims. long, 
millims. 
165 
Least circumference of the femur . 
. . . 80 
90 
79 
Width of the condyles . . . . , 
. . . 66 
67 
73 
Length of the tibia 
150 
129 
Least circumference of the tibia . . 
. . 60 
72 
57 
Length of the fibula . 
. . 123 
138 
123 
Least circumference of the fibula . . 
. . 45 
45 
43 
