Kneeland on the Skeleton of the Great Chimpanzée. 341 
human, to which it also comes nearer, in its curves, than to 
that of any of the Quadrumana. 
The pelvis of the T. gorilla departs widely from that of the 
Chimpanzée and Orang, and approaches that of man in the 
greater spread of the ilium, — its deep anterior cavity, and 
corresponding posterior convexity, on which a well-marked 
longitudinal ridge indicates the origin of the gluteus maxi- 
mus, — and a fainter semicircular line, extending from the 
sciatic notch to near the rudimentary anterior inferior spinous 
process, about two and a half inches above the acetabulum, . 
the probable origin of the gluteus minimus; the anterior 
superior spinous processes are fully six inches in advance of 
the plane of the sacrum. The sacrum extends only to the 
spine of the ischium, about four inches from the tuberosities 
of this bone, so that the pelvis has somewhat of the length- 
ened narrow form peculiar to the Quadrumana, though it 
projects far more from the line of the spine than in the other 
members of the group. 'The superior aperture has not the 
narrow, elongated shape of the Orang's, the antero-posterior 
diameter being only half an inch greater than the transverse, 
these being respectively six and a half and six inches ; in the 
female, aecording to Dr. Wyman’s measurements, the dif- 
ference is greater, being three inches. "The tuberosities of 
the ischia are very thick and broad, and the rami of the 
pubes very wide; the whole lower portion indicates great 
strength and solidity. It is the portion of the pelvis between 
the acetabulum and the lower edge of the sacro-iliac articula- 
tion, whieh is so much shorter in this animal than in the 
Chimpanzée, and which gives to the pelvis its more human 
aspect. 
At first sight the scapula has the appearance of 
having very much its shape, but somewhat enlarged ; the 
measurements given at the end of the article show it to have 
belonged to a larger specimen than the one described by 
Dr. Wyman. It more nearly resembles that of the Orang 
than that of the Chimpanzée, but is more like that of Man 
the human, 
