696 



ME. F. G. PAESONS ON THE 



[June 16, 



The Biceps has one broad head, which rises continuously from 

 the coracoid and the top of the shoulder-joint ; it is entirely 

 outside the capsule of the shoulder. The innermost fibres, those 

 coming from the coracoid, are inserted into the tubercle of the 

 radius, tlie others pass to the ulna. Macalister describes two 

 separate heads, coraco-radial and gleno-ulnar, in the Great Kan- 

 garoo and Bennett's "Wallaby. Meckel's account of the muscle in 

 the Great Kangaroo seems to correspond with my own. 



Fig. 7. 



Peoloral muscles of Peirogale, 



A. Superficial part of pectoral. I 15- Siiliolavius. 

 B&C. Deeper parts of pectoral. | F. Deltoid. 

 D. Pectoralis qiiartiis. | 



The Brai-liialis anticus consists of two parts : the outer comes 

 from behind the surgical neck of the humerus and from the outer 

 part of that bone ; the inner, which is small, rises from the lower 

 third of the anterior border. The two heads unite to be inserted 

 into the ulna with the deep part of the biceps. 



