10 ON THE ANATOMY OF THE 



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The Bones. 



The general appearance of the skeleton is pretty 

 accurately given by Dr Tyson. The chief differ- 

 ence between his figure and the present specimen, is 

 the greater length of the arms, the prominence of 

 the orbitar processes of the frontal and of the max- 

 illary bones, and the consequent greater concavity 

 of the profile of the face in the latter. 



The Bones of the Head. — The general form of 

 the head certainly approaches nearer to that of man, 

 than in any other species of this genus ; but the top 

 of the head is more fiat, and the union of the spine 

 with the head is rather farther back. The differ- 

 ent pieces of the cranium are united by indented 

 sutures, that have the same position as in man. In 

 the lambdoid suture, at its junction with the sagit- 

 tal, we found an os triquetrum of small size. The 

 squamous suture of the temporal bone is smaller,, 

 and rather less overlapping than in the human sub- 

 ject. The orbitar processes of the os frontis, pro- 

 ject about half an inch beyond the general convexi- 

 ty of that bone ; and the orbits of the eyes are pro- 

 portionally larger, and rounder than in man. On 

 taking off the upper part of the cranium, the fossae 

 for the lodgment of the brain, seem less strongly 

 marked than in man, and have fewer inequalities of 

 surface. The frontal fossae have smoother bases, 



