The Myology of Chimpanzee and Baboon. 455 
supplied only the second and fifth digits as it does in my animal. 
In the baboon, he describes the same relations. In Beddard’s 
chimpanzee and orang, this muscle sent perforating tendons to 
the third, fourth, and fifth digits. In Keith’s chimpanzee this 
muscle supplied the second and fifth digits. Forster said that 
this muscle supplied the fifth digit in his “Papua neugeborenen”’ 
but also united with the flexor hallucis longus to form a tendon, 
which supplied the other four digits. Owen found three tendons 
in his orang: first to the second digit (perforans); second to the 
fourth digit (perforatus); third to the fifth digit (perforans). In 
my chimpanzee, there arises from this tendon at its division a 
belly which supplies the perforatus tendon to the fourth digit. 
However, as no fibers from the common belly are included in this 
one, I have decided to include it with the flexor digitorum brevis 
rather than with this muscle. (See table IV.) 
TABLE IV 
INSERTION OF 
ANIMAL REPORTED BY 
FLEX. DIG. TIBIALIS | FLEX. DIG. FIBULARIS 
Chimpanzee Champneys *digits II, V | digits I, IIt; IV 
Chimpanzee Beddard digits III, IV, V | digits I, II 
Chimpanzee Keith digits II, V digits I, III, IV 
Chimpanzee Michaélis digits II, V digits I, III,1V 
Chimpanzee Duvernoy - no tendon to hallux 
Chimpanzee Author digits II, V Va aieris Ie Te TV, 
Baboon Champneys digits II, V | digits I, III, IV 
Baboon Michaélis digits II, V | digits I, III, IV 
Baboon Author *digits II, V | digits I, JOE IW 
Orang Beddard digits III, IV, V | digits I, II 
Orang Owen digits II, IV, V no tendon to hallux 
Orang Hartmann | notendon to hallux 
Orang Primrose | no tendon to hallux 
Simiadee Dobson digits II, III, IV 
The Flexor hallucis longus (flexor digitorum fibularis) (fig. 
4, H) arises from the shaft of the fibula extending from below the 
insertion of the soleus to a point 6 cm. from its distal extremity, 
