BY CHARLES W. DE VIS, B.A. 307 



Coraco brachialis — C. brevis. — The short portion rises from the 

 lower two-thirds of the posterior surface of the epicoracoid, and 

 from the internal surface of the head of the humerus ;— it is inserted 

 into the proximal half of the fore edge of the humerus. C. longus. 

 The long portion rises from the lower (sternal) edge of the common 

 origin, and is inserted into the inner condyle. 



Levator scapuke. — From the aponeurosis covering the side of the 

 neck, and from the pleurapophyses of the atlas and three succeeding 

 vetebrse. It expands as it passes backwards to its insertion, which 

 is separable into two parts, a lower or ventral one beneath the 

 upper part of the origin of the sternohyoid, and a dorsal one into 

 the upper interior angle of the suprascapula and the edge of the 

 scapula. The two portions may be separated for some distance ere 

 they join. 



Latissimus dorsi. — From the fourth, fifth, and sixth dorsal 

 vertebrae, and thence to the last true rib ; — inserted into the short 

 ridge on the posterior external surface of the humerus below the 

 head, 



Costocoracoid. — A very feeble muscle from the anterior edge of 

 the first sternal rib ; — inserted into the sternocoracoid ligament 

 going from the posterior upper of the sternum to the bottom of 

 the epicoracoidal fork. 



, Stemoco stalls. — A thin sheet from the same point of the sternum 

 to the anterior edge of the third sternal rib. 



Serratus. — 1st. From the distal moiety of the fourth and fifth 

 sternal ribs and posterior edge of the third, along which it 

 exchanges fibres with the second portion beneath ; inserted into 

 upper part of the hinder edge of the scapula, extending a little 

 around the upper angle. 



2nd. From the lower end of the third vetebral rib beneath the 

 first portion \ inserted into the middle of the hinder margin of the 

 scapula below the first portion, 



3rd. Small, from the back of the upper part of the third rib ; 

 inserted into the lower surface of the hinder upper angle of the 

 suprascapula. 



