SOCIETY OF THE UNIVERSITY OF ABERDEEN. 67 



continued across the fibres of the inferior band of the omohyoid. These 

 abnormalities occurred on both sides of the neck. 



(Signature of observers) GEORGE R. McRoBERT. 



CHARLES SHEARER. 

 ALEXANDER G. LUMSDKN. 



Date of observation, 30th October, 1913. 



Sex of subject, Male. 



Side or region of subject, Right upper Extremity. 



Number of subject, 4. 



Axillary Arch. 



In this subject the axillary arch was found to be a muscular slip, 2i inches 

 long and about inch broad. It extends from the upper edge of the latis- 

 simus dorsi, and crosses the axilla in front of the axillary vessels and nerves 

 to join by an aponeurosis the under surface of the tendon of the pectoralis 

 major, the fascia over the biceps, and the attachment of the subscapularis 

 to the lesser tuberosity. 



(Signature of observers) JAMES F. FRASER. 



A. C. FOWLER. 



Date of observation, 9th February, 1914. 

 Sex of subject, Male. 

 Side or region of subject, Abdomen. 

 Number of subject, 7. 



Abnormal Peritoneal Fold. 



From the back of the anterior abdominal wall a large loose fold of 

 peritoneum extends. Following it from the right side, it leaves the abdominal 

 wall and passes on over the right hypogastric artery, and urachus, con- 

 tinuing to the left hypogastric artery. It is folded round the last mentioned 

 artery and comes into opposition with the above mentioned piece of peri- 

 toneum, extending back to the abdominal wall. Before they reach the 

 abdominal wall the two layers separate enclosing a pyramidal space. From 

 above downwards, the two layers leave the abdominal wall, come into opposition 

 in the anterior, and enclose the arteries and urachus in the posterior part. 



