32 MUSCLES OF THE SHOULDER AND ARM. 
indeed it is not separate in the dog. The fibres pass 
straight to the scapula, to be inserted along the verte- 
bral edge. 
4. The Levator Anguli Scapule arises from the 
transverse processes of the posterior cervical verte- 
bre. The fibres forma broad sheet of muscle, and are 
inserted into the under or ventral side of the scapula 
near the anterior angle of the vertebral margin. Its 
insertion is just to the inside of that of the rhom- 
boideus minor. 
5. The Levator Scapule is a narrow flat band 
of muscle which has its origin from the transverse 
process of the atlas, and is inserted into the acromion 
process of the scapula and a small extent of the neigh- 
boring portion of the spine. — Its insertion is just to the 
inner side’ of that of the “middle trapezius.) his 
muscle corresponds to the devator clavicule of the cat. 
6. The Levator Humeri is a muscle similar in 
shape to the last, lying nearer to the ventral mid-line. 
It arises from the skull posterior to the external audi- 
tory meatus, and is inserted below the middle of the 
humerus, on its ventral face. Just betore the muscle 
passes over the shoulder-joint it is intersected by a 
transverse line of tendon dividing it into two portions, 
the anterior of which corresponds to the clavo-mastoid 
of the cat, while the posterior division represents the 
clavo-deltoid. 
7, The Sterno-mastoid lies to the inner side of 
the last-mentioned muscle; it will be described in 
connection with the dissection of the neck. 
8. The Supra-spinatus is a large muscle occupy- 
ing the whole of the supra-spinous fossa, from which 
its fibres originate. They pass outward to be inserted 
into the great tubercle of the humerus. 
