1903. ] OSTRICH FROM THE ISLAND OF SAMOS. 207 
The pelvis at my disposal is represented only by a fragment 
from the last presacral to the third postsacral vertebra (6 vertebrae, 
the first and the last incomplete), and in connection with it the 
corresponding parts of the iia, i.e. the acetabular and immediately 
postacetabular region. The acetabula themselves are not entirely 
preserved, but only the caudal border of that on the left is quite 
intact, and the antitrochanter is broken away on both sides, so 
that on the left side only its outlines can be determined. 
Text-fig. 34. 
Lateral view of the pelvis of Struthio karatheodoris. + nat. size. 
In the principal and most characteristic features, the fossil 
does not differ from S. camelus, and there can be no doubt that 
the ratite bird of Samos belonged to the same genus, 
In the following features the fossil pelvis agrees with or differs 
from that of the recent Struthio :— 
The pelvis is compressed from both sides in the same manner 
as in Struthio camelus (though the compression is a little less 
marked), so that the dorsal aspect of it is much as in the 
recent form. 
li. The sacral vertebre of the fossil are much stouter. The 
same irregular sculptures occur, forming rough longitudinal 
ridges. 
iii, The centra of the two “ true sacral vertebre” are, compared 
with the following centra, narrower, but better rounded 
than in the recent Ostrich. 
iv. The acetabulum has quite the same position as in SS. camelus. 
v. The plane between the ventral border of the antitrochanter 
and the dorsal edge of the foramen obturatorium is—in 
comparison with S. camelus—turned forward, i.e. it slopes 
more rapidly towards the acetabulum. 
vi. The outlines of the antitrochanter ave just as in S. camelus, 
and its size is also the same. 
vii. The ilia of the fossil and the recent Ostrich are closely 
similar. There is no difference in the dorsal view of the 
pelvis exceeding possible individual variation. The vertical 
Proc. Zoot. Soc.—1903, Vou. I. No. XIV. 14 
