SOCIETY OP THE UNIVERSITY OP ABERDEEN. 143 



Flexor profundus diyitorum. 



This muscle supplying the remaining third, fourth and fifth digits 

 proceeded from the ulna. At the level of the wrist joint there was a 

 very pronounced fusion of all the tendons by fibrous bands. The 

 disposition of the tendons of the sublimis and profundus on the 

 digits was exactly as in man. 



Lumbricales. 



These muscles were four in number. The first arose from the 

 radial side of the profundus tendon to the index. 



The second arose from the radial side of the tendon to the middle 

 finger. Also a small slip joins it from the sublimis tendon to the 

 middle finger. 



The third and fourth arose together from the radial side of the 

 profundus tendon to the ring finger, and from the fibrous tissue 

 joining the tendons. The belly of the fourth lumbrical split into 

 two at the level of the interdigital space, each belly being provided 

 with a minute tendon. One was inserted into the fourth extensor 

 expansion, and the other into the adjacent side of the fifth. I cannot 

 find notes of a similar behaviour of the fourth lumbrical. 



Supinator radii longus. 



Its origin extended up to the insertion of the deltoid, and its 

 tendon of insertion was attached for a distance of 1 inch above the 

 styloid process, thus differing somewhat from the human condition. 

 Hepburn makes a similar observation. 



Extensor carpi radialis longior. 

 As in man. 



Extensor carpi radialis brevior. 



This muscle received fibres also from the external lateral ligament 

 of the elbow joint. 



Extensor minimi digiti. 



Was divided into two parts on the dorsum of the carpus. One 

 tendon passed to the fifth and the other to the fourth finger. 



