THE GIGANTIC LAND-TOETOISES OF MAUEITIUS. 51 
Measurements. 
T. trisernita. T. inepta. T. leptocnemis. 
n7 No. 39932. No. 39934. No. 39935. 75.10.20.1. No. 39931. Bl. B 2. B3. 
mm. mm. mm. mm. mm. mm. mm. mm. mm. 
Longest inner vertical diame- 
ter of pelvis (from summit 
of ilium to symphysis) ... 126 185 95 90 156 140 
Longest inner horizontal dia- 
meter of pelvis 128 140 90 84 122 102 
Shortest inner horizontal dia- 
meter (between ilio-pubic 
prominences) 89 82 60 60 94 72 
Longest diameter of foramen 
obturatorium 35 32 20 19 40 36 21 
Width of symphysial bridge 26 27 22 16 30 22 26 
Breadth of posterior portion 
ofossaischii 64 55 34 38 65 50 
Length of OS ilii 112 110 75 73 130 113 120 105 
Least Avidth of os ilii 34 28 22 19 28 21 27 22 
Femur. — Thirteen out of fifteen specimens are perfectly similar ; and having been 
found in the " Mare aux Songes " with the carapaces of T. triserrata and T. inepta^ we 
may infer that the femurs of these two species do not differ from each other. 
a. All these specimens (Plate XXIX, fig. A) are rather stout, with a nearly straight 
subtetrahedral shaft ; its distal portion is much dilated, consequently its outer margin 
much curved. The ovoid head of the femur is separated from the trochanters by a 
deep and broad cavity, out of which arises a more or less indistinct smooth groove, 
dividing the trochanters. The head itself does not rise above the level of the summit 
of the larger trochanter. 
h. The two remaining femurs (Plate XXIX. fig. B) ofi'er chief evidence of the exist- 
ence of another species, for which I have proposed the name Testudo lej^tocnemis.. 
They were found together with the scapulae and pelves described above, and differ from 
the preceding species by the slender shaft and much less dilated condyles. The shaft 
is less distinctly tetrahedral, the anterior side being somewhat narrowed and very 
convex. The summits of the ovoid head and larger trochanter are on the same level ; 
and the hollow between head and trochanters is deep and broad ; also the groove be- 
tween the trochanters is distinct. 
* Newton collection. 
h2 
