70 MR. F. G. PARSONS OK THE 



The Trkeps has the usual three heads ; of these the long and 

 external unite, while the internal remains distinct to the 

 insertion. 



The Pronator radii teres is inserted into the junction of the 

 upper third with the lower two-thirds o£ the radius, and at this 

 point the bone suddenly curves. 



The Flexor carpi radialis is inserted into the base of the radial 

 metacarpal bone (metacarpal of medius). 



The Palmaris longus is absent. 



The Plexor sublimis digitorum rises from the internal condyle 

 and splits into two for the two digits (medius and annularis). 

 The tendons are perforated as usual, but the ring noticed in 

 Eodentia, Insectivora, and Carnivora was not seen *. 



The Flexor carpi ulnaris is absent — a fact which interests 

 me, as I do not remember a similar occurrence in any other 

 mammal. 



The Flexor profundus digitorum has three distinct heads — one 

 from the internal condyle, one from the olecranon, and one from 

 the upper third of the radius and ulna. 



The general morphology of this muscle in mammals will be 

 found in the reference just given, and it seems to me that the 

 head from the condyle is the radio-condylar ; that from the 

 olecranon is the ulno-condylar which has slipped down, although 

 it is true that when this slips down in the Primates it is tlie 

 coronoid instead of the olecranon which it goes to ; while the 

 head from the radius and ulna is the fused radial and ulnar heads. 



Only one Lumhrical is present, and that comes from the 

 tendon to the annularis. 



The Pronator quadratus is attached to the lower third of the 

 radius and ulna. 



The FpitrocJileo-anconeus is absent. 



The Anconeus is remarkable for having a broader attachment 

 to the humerus than to the ulna. 



There is only one Extensor carpi radialis, and this passes from 

 the external supracondylar ridge to the base of the metacarpal 

 bone of the medius ; it therefore probably is extensor carpi radialis 

 brevior. 



The Fxtensor communis digitorum, like the flexor sublimis and 

 profundus, gives off two tendons to the medius and annularis. 



The Fxtensor minimi digiti is a distinct muscle rising from 

 * "Muscles of Mammals," Journ. of Anat. toI. xxxii. p. 731. 



