82 



DESCHIPTION OF THREE 



vertebrte are seven in number and large : the transverse processes of all 

 pointing forwards, those of the two first and of the last one, smaller than 

 the others. Sacral vertebrae three, united by ossification of the lateral pro- 

 cesses — passages being left opposite the intervertebral spaces for the trans- 

 mission of the sacral nerves. Caudal vertebrae 28, the first four having a 

 remains of the spinal canal. The number of vertebrae here exceeds that of 

 the Catarse by 4. The pelvis is shorter and broader in the Muchabha than 

 the Catarse, the symphisis pubis being in the latter 1^ inch long, and in 

 the former, only | inch. In the Catarse the acetabulum is much smaller in 

 circumference and not so deep : but the groove in the anterior margin for 

 the lodging of the round ligament is the same in both animals. The ster- 

 num is composed of eight distinct bony pieces of a cylindrical shape : the 

 posterior one furnished with heart-shaped cartilage f of an inch long, 

 projecting beyond the attachment of the last pair of true ribs. The 

 ribs are 13 pair, 9 true or articulated with the sternum by intermediate 

 cartilage, and four false. The scapulae present nothing remarkable to 

 assist in elucidating the muscular powers of the animal, save the largeness 

 of the spine and the extent and shallowness of the glenoid cavity — the 

 former indicating the strength of the scapular muscles, and the latter, a 

 great latitude of motion in the humerus. The glenoid cavity is oval-shaped 

 and twice the extent of that in the scapula of the Catarse. And here we 

 have the first indication of a prominent difference in the motive organs of 

 the one animal from those of the other. 



The humerus is 3| inches long, strong in its shaft, and bearing pro- 

 minently all the marks of a bone subjected to vigorous and varied muscular 

 power. Its head is large and represents a small segment of a large circle. 

 It appears twisted towards its distad extremity, where it dilates into two 

 large condyles for the origin of the strong muscles of the hand and fingers ; 

 and the ridge for the insertion of the great pectoral muscles is strongly 

 marked. Contrasted with the humerus of the Catarse it helps much to 



