The Muscles Let 
and becomes united radially with the thick flat 
tendon ending the first two heads. The common 
terminal tendon splits into four points which pass 
among the tendons of the carpo-phalangei muscle 
and are inserted on the terminal phalanges. From 
the terminal tendons of this muscle spring the 
lumbricales muscles. 
Carpo-phalangeus (Plate II., Fig. 1, 8) (Ab- 
ductor pollicis). Springs from the os carpi-radiale; 
is inserted on the first phalanx of the thumb. 
Carpo-metacarpalis I. (Plate II., Fig. 1, 9) 
(Opponens pollicis). Originates from the os carpi- 
radiale and is inserted on the radial side of the 
entire first metacarpus. 
Metacarpo-phalangeus I. Originates from the 
base of the metacarpus of digit III.; is inserted on 
the ulnar side of the first phalanx of the thumb. 
Pisiformi-phalangeus primus digits V. (Plate II., 
Fig. 1, 7) (Abductor digiti minimi, Abducteur du 
petit doigt, Abductor digiti quinti). Springs from 
the pisiform bone, and is inserted on the medial 
border of the first phalanx of the fifth finger. 
Carpo-metacarpalis V. (Opponens digiti minimi, 
Opponens primus). Springs from the carpi-ulnare 
bone and is inserted on the metacarpal bone of the 
fifth digit. 
Carpo-phalangeus primus digiti V. (Plate ILI., 
Fig. 1,3) (Flexor digiti minimi brevis, Opponens 
secundus). Arises from the ulnar border of the 
proximal part of the carpi-radiale bone and is 
