34 DISSECTION OF THE CAT 



Reflect the cephalo-humeral and the middle and 

 posterior trapezius muscles. 



6. The Rhomboideus Major is the broad muscle 

 which arises from the neural processes of the six 

 posterior cervical and the anterior dorsal vertebrae. 

 It is inserted on the vertebral margin of the 

 scapula. (Plate III.) 



7. The Rhomboideus Capitis is a narrow muscular 

 band lying along the anterior margin of the rhom- 

 boideus major. Its origin is on the lambdoidal 

 ridge of the skull and its insertion is on the verte- 

 bral margin of the scapula, just in front of the 

 insertion of the rhomboideus major. (Plate 

 III.) 



8. The Levator Claviculae is a long, narrow muscle 

 which arises from the transverse process of the 

 atlas, and is inserted on the metacromion process of 

 the scapula. (Plate II.) 



9. The Spino-deltoid Muscle takes its origin from 

 the spine of the scapula, opposite the insertion of 

 the middle trapezius muscle. Its fibres run down 

 to unite with those of the following muscle. 

 Both are inserted on the deltoid ridge of the 

 humerus. (Plates II. and III.) 



10. The Acromio-deltoid Muscle is similar in shape 

 to the spino-deltoid muscle. It arises from both 

 the acromion and metacromion processes, and also 

 from the intervening portion of the spine of the 

 scapula. It is inserted, together with the spino- 



