Eoss — On the Mijology of the Cheetah. 25 



Tlie first of these arose from the par-occipital and posterior part of 

 the squama, passed downwards parallel to the posterior border of the 

 sterno-mastoid, and became continuous with the clavicular deltoid ; 

 the line of separation between the two being faintly tendinous, and 

 marked by the insertion of cleido-mastoid. Weight = 1"20. 



The scapularis superior, arising from the ligamentum nuchae and 

 7th cervical spine, was inserted into the anterior border of the spine 

 of the scapula. Just previous to its insertion it fused with the tra- 

 chelo-acromialis, or omo-atlanticus of Professor Haughton. Weight 

 of two together = 2'65. 



The scapularis inferior, smaller and thinner than the preceding, 

 arose from the upper six dorsal spines, and had also an additional slip 

 of origin from the latissimus dorsi of the opposite side, inserted into 

 the posterior fifth of the lower border of the spine of the scapula. 

 Weight =1-40. 



The cleido-mastoid arose from the mastoid process, and was in- 

 serted into the tendinous clavicular line at the junction of the clavi- 

 cular trapezius and clavicular deltoid. Weight = "70. 



The trachelo-acromialis, or omo-atlanticus of Professor Haughton, 

 arising from the transverse process of the atlas, was inserted into the 

 superior scapular portion of the trapezius. 



The rhomboideus divided into three portions, major, minor," and 

 occipital, the two latter being fused together. 



The occipital arose as usual from the occiput, and soon fused with 

 the minor, which took its origin from an aponeurosis, connected with 

 the first six cervical spines, and also directly from the 7th cervical 

 and 1st dorsal spines. It was inserted into the greater part of the 

 posterior border of the scapula = 2-75. The major, much smaller, 

 arose from the 2nd, 3rd, and 4th dorsal spines. Insertion into the 

 inferior angle of the scapula, connected with the origin of teres major. 

 Weight = -90. 



Both major and minor were very coarsely fibred, flabby, and, 

 especially the former, mixed with a large quantity of firm yellowish 

 fat, amounting almost to fatty degeneration. 



The major was also more or less united with the serratus magnus, 

 numerous fibres and masses of fat extending from one to the other. 



The teres major (3"35) had an extensive origin from the internal 

 •surface of the scapula, posterior portion, and also from the aponeu- 

 rosis covering the subscapularis. Insertion fieshy, about an inch 

 broad, into the upper part of the internal surface of the humerus, 

 being intimately connected with the internal head of the triceps. 



Prom its extensive origin from the scapula, and the relative posi- 

 tions of this bone and the humerus, «,. e., nearly at right angles, this 

 muscle must be a powerful retractor, as well as internal rotator. 



Teres minor ("SI), small and cylindrical, with a second origin from 

 long head of triceps. Insertion fieshy. 



Latissimus dorsi (12-36) took an extensive origin from the 3rd- 

 12th dorsal and 1st lumbar vertebrae, from lumbar fascia, and three 



