US PROCKKPINlis OK THK ANATOMICAL AND ANTHROPOLOGICAL 



Muscles of the, Ear. 



Of the extrinsic muscles of the ear the retrahens was the most 

 clearly differentiated. The attrahens was only slightly developed. 



The <lf/>r<'sxtir HI tw/c* of the loircr //// were exceedingly difficult 

 to separate, but indications of several strata were noted, differing in 

 direction and approaching more or less to the condition found in man. 



Buccinator. 



Was a well-marked muscle and pierced in the usual way by the 

 parotid duct. 



Regarding the facial musculature generally it may be noted that 

 though exceedingly well developed it shows a great tendency to fusion 

 of the various strata, especially round the mouth and orbit exactly 

 the condition one would expect when one considers the lesser develop- 

 ment of facial expression in the anthropoid. 



MUSCLES OF THE UPPER EXTREMITY. 



Trapeziums. 



Origin as in man. The mastoid insertion was purely fibrous. 

 The clavicular insertion came in contact with the cleido-occipitalis 

 muscle. The insertion of the trapezius was pierced in the usual way 

 by the great occipital nerve. 



Latissimus dorsi. 



Arose by fleshy fibres from the anterior half of outer lip of iliac 

 crest as far as the anterior superior spine, also from three ribs inter- 

 digitating with the external oblique. There was no addition from the 

 inferior angle of scapula. A small bundle of fibres passes from the 

 belly of the muscle to join the teres major. This bundle was also noted 

 by Hepburn (Fig. 1 ). From the flattened tendon of insertion there arose 

 the dorso-epitrochlearis or latissimo-condyloideus muscle. This was a 

 well-marked flattened thin muscle stretching down the inside of the 

 arm to be inserted into the internal condyle of the humerus. It 

 appears that this muscle may sometimes fail to reach the internal 



