1-1-1 PROCKKmXCJS OF THE ANATOMICAL AND ANTHKOPOMHilOAL 



Extensor indicia. 



Was supplied mostly to the index, but a slender tendon was also 

 sent off to join the tendon to the ring finger. This was found also in 

 Hepburn's case. 



Extensor ossis metoeorpi pollici*. 



Was intimately associated with the extensor brevis pollicis, both 

 passing under the same fibrous ring. We shall compare this condition 

 later with that of its homologue, the tibialis anticus of the lower 

 extremity. 



The extensor hwri* /Hill'irix was inserted into the base of the 

 metacarpal of thumb and did not reach the first phalanx. 



Extensor longus pollicis. 



The exact homologue of the muscle of same name in man. It 

 supplied the deficiency of the extensor brevis pollicis by being inserted 

 also into the first phalanx. 



Abductor pollicis. 

 As in man. 



Opponens pollicis. 

 Only slightly developed. 



Flexor brevis pollicis. 

 This muscle had two distinct heads, an inner and an outer. 



Adductor pollicis. 



Was a flattened triangular muscle arising from a fibrous septum 

 attached to the centre of the middle metacarpal. 



Flexor brevis minimi digiti. 



Was fused partly with the abductor minimi digiti. It ended in 

 two tendons one of which passed to the outer side of the first phalanx 

 of fifth and the other partly into the head of the metacarpal. 



Opponens minimi digiti. 



Was also distinguishable but blended at its origin with the flexor 

 brevis minimi digiti. 



