Note on Supraclavicular Muscles 



by 



B. Anderson 



(in Galway). 



The numerous slips of muscle rimning from the sternum or 

 flrst rib to the Shoulder girdle ahove the clavicle, or from one portion 

 of the Shoulder girdle to another, may he grouped together and named 

 supraclavicular muscles. Under this head the different varieties of 

 the omohyoid will come, the costo- and sternoscapular muscles and 

 the supraclavicularis proprius. I have met with some rare varieties 

 of the omohyoid and other muscles of this kind, and a few of the more 

 important are given here. 



Medio-scapular. A muscle band is not uncommonly found 

 extending from the tendiiious intersection of the thyrohyoid to the 

 scapula or clavicle. This band is usually described as a variety of 

 the omohyoid, or as the posterior belly or a portion of the latter. 



Sternoscapularis. I met with a very instructive specimen of this 

 muscle some years ago, on the right side of a female subject, and 

 incorporated a description of it with with some notes on the omohyoid 

 muscle. I shall here repeat the description. — Tendinous fibres are 

 prolonged upwards and outwards from the anterior surface of the 

 sternothyroid. These are reinforced by fibres from the tendon of 

 the last mentioned muscle. From this tendinous band a muscle 

 belly passes outwards above the clavicle over the brachial plexus 

 and subclavia!! artery, aijd terminates in a tendon two inches 



