TRANSACTIONS 



OF 



THE ZOOLOGICAL SOCIETY. 



I. Osteological Contributions to the Natural History of the Anthropoid Apes. No. VII. 

 Comparison of the Bones of the Limbs of the Troglodytes Gorilla, Troglodytes niger, 

 and of different varieties of the Human Race; and on the general characters of the 

 Skeleton of the Gorilla. By Professor Owen, F.R.8., F.Z.S. &fc. 



Read September 9, 1851. 



[Plates I. to XIII.] 



[The present section of this Paper on the Osteology of the Gorilla is a continuation of the part printed in 

 Volume IV. Part IV. p. 113, of the 'Transactions of the Zoological Society.'] 



Bones of the Upper Limb. 

 Scapula. — Plate I. 



1 HE blade-bone of the Gorilla (figs. 1, 2, 3) is a triangular plate of bone, resembling 

 in general form, more than does that of any other animal, the scapula of Man 

 (ib. figs. 7 & 8). The chief difference arises from the less unequal division of the dorsal 

 or outer surface by the spine (s, a), which begins much nearer the middle of the basal or 

 vertebral border (o, s, u). 



The superspinal tract is concave, with a narrow median convexity extending along its 

 middle part ; its basal boundary (o, s) is convex. A short broad groove, leading to the 

 canal for the nutrient artery of the bone, is below the superscapular notch (n). The 

 infraspinal tract (s, g, u) is concave along the origin of the spine, becomes convex at the 

 upper half, and concave at the lower half; the convexity subsides at the broad base of 

 the acromion, the concavity extends to the neck of the scapula. The thick rounded 

 rising, forming the anterior two-thirds of the lower boundary of this concavity, divides 



VOL. V. PART I. B 



