1894.] ANATOMY OF PALAMEDEA CORNUTA. 547 



Flexor digitorum sublimis. — A strong band of tendon arises from 

 the inner condyle of the humerus immediately below the origin of 

 the pronator profundus. This band is attached by strong fasciae 

 to the ulna, and runs parallel with that bone to be attached to the 

 ulnar carpal bone. From the dorsal surface of this two inches 

 above its insertion there arises by a small fleshy head the flexor 

 sublimis. It is inserted by a tendon to the base of the second 

 phalanx of the second digit. 



Flexor digitorum profundus. — This arises fleshy from the two 

 middle quarters of the ulna. Its tendon is inserted halfway down 

 the second phalanx of digit 2. 



Flexor carpi idnaris. — This arises from the inner condyle of the 

 humerus by a strong tendon in which there is a well-marked 

 sesamoid ; it runs down the inner side of the ulnar to be inserted 

 in the great tuberosity of the ulnar carpal bone. A thinner muscle 

 arising from this passes into a tendon which is connected with 

 the secondary feathers and is inserted alongside the great tendon 

 of this muscle. 



Ulni-metacarpcdis ventralis. — This arises fleshy from the radial 

 face of the last quarter of the ulna. Its tendon after passing 

 over a groove in the radial carpal is inserted into the base of the 

 first metacarpal proximal to the spur. 



Extensor brevis pollicis. — This small muscle arises fleshy from 

 the base of metacarpal one ; it is inserted to the end of the first 

 quarter of the phalanx of the thumb. 



Abductor pollicis. — This arises fleshy from the ventral surFace 

 of the tendon of the extensor metacarpi radialis ; its insertion is 

 fleshy to half of the first phalanx of the thumb. A ligament con- 

 tinuous with it runs to the second phalanx of the thumb. 



Flexor pjolUcis. — This arises fleshy between the root of the 

 metacarpal spur and a knob on the ventral side of the metacarpal ; 

 its tendon is inserted on to the inner side of the base of the first 

 phalanx of the thumb, but its fleshy belly gives rise to a slip of 

 muscle which passes to the abductor indicia. 



Abductor pollicis. — This arises from the outer surface of the 

 metacarpal just beyond the articulation of the thumb ; its belly 

 runs across and is inserted by slips to the feathers on the thumb 

 having no connection with the thumb-bones. 



Abductor indicis. — This arises as a delicate fleshy slip from the 

 flexor pollicis and from nearly the whole of the shaft of the second 

 metacarpal. Its tendon is inserted at the base of the first phalanx. 



Flexor digiti III. — This arises fleshy from the last two-thirds 

 of metacarpal 3, and its tendon is inserted at the base of the first 

 phalanx. 



Madio-metacarpalis ventralis. — The tendon of origiu comes from 

 the lateral face of the distal end of the radius ; the muscular belly 

 divides in two. The superficial division is inserted by a short 

 broad tendon to the upper surface of metacarpal III. The deep 

 division is inserted fleshy to immediately below the superficial 

 tendon. 



