50 
THE EACES OF THE MASCAEENES. 
than in the other specimens. They evidently belonged to very old individuals ; and the 
atrophied condition of the bone is no doubt due to age. The individual to which one 
of these pelves belonged is represented also by a humerus showing the same peculiarity. 
The female pelvis is scarcely half the size of the male. 
h. Of the second type (Plate XXVI. fig. B, and Plate XXVIII. fig. B) two perfect 
male examples are in the British Museum, and two fragments of a female and male in 
Mr. Newton's collection. It is readily distinguished from the first type by its con- 
siderably longer and narrower ossa ilii, the longitudinal diameter of the pelvis much 
exceeding in length the horizontal. On the outer surface of the ilium scarcely a trace 
of a ridge is visible in the upper dilated portion. The lower part of the pubic bones 
is gently inclined downwards and slightly concave above, and emits laterally a long, 
strong, nearly styliform process, obliquely directed outwards. The posterior part of the 
ossa ischii is of moderate width, deeply concave above, with a trenchant symphysial 
crest beneath, which, expanding towards behind, forms a large triangular tuberosity. 
The upper posterior corner of each side is developed into a smaller tuberosity, pointing 
upwards. The obturator foramina are of moderate width, considerably wider than the 
symphysial bridge between them, which is provided with a median ridge above. 
This type propably belongs to T. inepta. 
c. The specimens of the third type are in a fragmentary condition, and were sent to 
me by M. Bouton with the scapula and femur. They came evidently from a deposit 
different from that in which the Dodo bones and the other Mauritian Tortoises were 
found, as they are not stained with the brown peat-colour, nor show any traces of root- 
lets of plants having been attached to them. Their surface is of a dirty white ; 
and many of the edges are worn, as if the bones had lain in running water between 
pebbles. The four fragments belong to four individuals, each consisting of an aceta- 
bulum with the neighbouring parts ; two have nearly the entire ilium preserved, one 
an obturator foramen with symphysial bridge, all the lateral pubic process. The pos- 
terior ischiadic tuberosity and the anterior pubic dilatation are lost. 
These pelves resemble in every respect, as far as we can see, the first type ; but the 
OS ilii is narrower, though considerably less so than in the second type. The lateral 
pubic process is slightly thickened at the end. 
They belong to the species Testudo leptocnemis, which is characterized chiefly by its 
femur, and of which we have noticed the scapula above. 
