648 MAMMALIAN ANATOMY 



On the Second Digit : 



(a) Proximal phalanx, the insertion of the palmar inter- 

 osseous and (radial side) the dorsal interosseous and 

 (ulnar side) the adductor indicis. 



(b) Middle phalanx, the insertion of the flexor sublimis digi- 

 torum, the palmaris longus, the extensor indicis, the 

 extensor communis digitorum, the extensor minimi digiti, 

 and the first lumbrical. 



(c) Distal phalanx, the flexor profundus digitorum. 



On the Third Metacarpal, the insertion of the extensor carpi 

 radialis brevior, the origin of the second palmar interosseous, and 

 the second and third dorsal interosseous. 



On the Third Digit : 



(a) Proximal phalanx, the insertion of the second palmar 

 interosseous, the second and third dorsal interosseous, 

 and the second lumbrical. 



(b) Middle phalanx, the insertion of the flexor sublimis digi- 

 torum, the palmaris longus, the extensor communis 

 digitorum, and the extensor minimi digiti. 



(c) Distal phalanx, the insertion of the flexor profundus digi- 

 torum. 



On the Fourth Metacarpal, the origin of the third palmar inter- 

 osseous and the fourth dorsal interosseous. 

 On the Fourth Digit : 



(a) Proximal phalanx, the insertion of the third palmar and 



the fourth dorsal interosseous and the third lumbrical. 

 (b} Middle phalanx, the insertion of the flexor sublimis 

 digitorum, the palmaris longus, the extensor communis 

 digitorum, and the extensor minimi digiti. 

 (c) Distal phalanx, the insertion of the flexor profundus 



digitorum. 



On the Fifth Metacarpal, the insertion of the extensor carpi 

 ulnaris and the opponens minimi digiti ; the origin of the flexor 

 brevis minimi digiti. 

 On the Fifth Digit : 



(a) Proximal phalanx, the insertion of the adductor minimi 

 digiti, the abductor minimi digiti, the flexor minimi digiti, 

 and the fourth lumbrical. 



