ON VARIETIES IN THE FORM OF ANTHROPOIDS. 211 



centre of this space is more marked, the nasal bones 

 are arched and not flattened, the orbital aperture 

 is larger in comparison with the general size of 

 the skull, and the frontal processes of the malar 

 bones are wider and more arched. One interesting 

 characteristic consists in a small, vertical, styloid 

 prominence on the posterior surface of tlie orbital 

 process. On the vertebral column the spinous pro- 

 cesses of the first, second, and third cervical vertebrre 

 are only slightly developed in height, while the 

 spinous processes of the three lower cervical vertebrae 

 are as high and large as those of Gorilla Oina. The 

 transverse processes of the first lumbar vertebra) are 

 remarkable for their length, and in their transverse 

 extension reach almost to the angle of the last rib. 



In this supposed variety of the gorilla the iliac 

 crest is more convex, the tuberosity of the ischium 

 is somewhat more everted, the neck of the femur 

 is more oblique, the os calcis is slenderer, and 

 its lower surface is more arched. The clavicle 

 appears to be shorter and less curved : the scapula 

 is more arched near its inner border; its outer 

 border is distinctly concave, while in Gorilla Gina 

 it is prominently convex. The base of the acromion 

 process is larger, and the olecranon fossa of the 

 humerus is perforated. The bones of the forearm 

 and hand, as well as of the shank and foot, are more 

 slender, and their prominences and inequalities are 

 less marked. The smaller bulk of the fore and hind 

 limbs corresponds with the comparative smallness of 

 the head. 



The colouring, grey and brown on the trunk, 



