R. Anderson, Note on Snpraelavicular Muscles. 147 



and a half long (6 cm), inseited for the extent of 2 cm into the upper 

 border of the scapula and the ligament over the notch. 



A small band is continued down to the outer third of the clavicle, 

 and a portion of the fibres is continued into the Supraspinatus fascia. 

 The breadth of the tendon of origin is one inch and a quarter 

 (30 mm). The breadth of the muscle 8 mm. The Omohyoid has a 

 slight origin from the upper border of the scapula, but is attached 

 to the upper border of the outer tendon of the stemoscapular muscle 

 for its whole length. The muscle passes upwards and inwards to the 

 hyoid bone, joining the sternohyoid in the last three inches 

 (75 mm) of its course. Below the point of union the sternohyoid is 

 joined by a fasciculus of the omohyoid. A tendinous inscription is 

 present. An offset of the descending brauch of Hypoglossus suppKes 

 the sternoscaimlaris, eutering the muscle near its inner tendon. 

 The omohyoid of the left-side is normal, and the sternohyoid is a 

 claviculo-hyoid muscle. 



Costoscapularis. In a male subject, aged72years, Imetwithacase 

 of a costoscapular muscle. The muscle arises for the extent of 6 mm 

 from the costal cartilage of the first rib near the inner border. The 

 origin is by tendon. The length of the tendon is two inches and is 

 behind the costoclavicular ligament, and internal to the tendon of the 

 subclavius, from which it is about a quarter of an inch distant. The 

 tendon passes upwai'ds and outwards beneath the suprascapular 

 vein, in front of the suprascapular artery and the subclavian vessels, 

 and terminates in a fleshy belly 10 cm in length, has an arched course 

 above the clavicle, is connected to the posterior belly of the omohyoid 

 by fascia, and terminates in a tendon 5 cm long, which is inserted into the 

 upper border of the scapula. 



Supraclavicularis proprius. This rare muscle, first seen and 

 described by Professor Gruber, I have twice seen and noted. As I have 

 been able to make out some additional facts concerning this muscle 

 I shall describe here one of the specimens. Tliis occurred on the left- 

 side of the neck of a female subject, aet. 75 years. The muscle was 

 attached internally to the clavicle, between the cleido-occipital and cleido- 

 mastoid fibres of the quadriceps. Externally it is fixed behind the 

 trapezius and the conoid tubercle. 



10* 



