1865.] MYOLOGY OF HYRAX CAPENSIS. 351 
into the inner side of the proximal phalanx of the middle digit ; the 
other one arises from the outermost deep tendon, on the inner border 
of its plantar surface, and is inserted into the inner side of the proxi- 
mal phalanx of the outermost (fourth) digit (fig. 13, L, L.). 
Fig. 13. 
Sole of the hind foot. 
T.ach. Tendo Achillis. F.1.h. Tendon flexor longus hallucis. F.2.d. Tendon 
flexor longus digitorum. F.d.d. Flexor brevis digitorum, with one of its 
- perforated tendons cut through, and the whole muscle drawn to the one side 
to expose the deep flexor tendons. .4. Accessorius. LL. Lumbricales, 
As in the hand, so in the foot, the only muscle visible on the 
dorsal surface is that situated on the inner side of the innermost digit. 
The muscles on the plantar surface are seven in number, three 
being more or less double, and apparently corresponding to the four 
pairs of interossei above described as existing in the hand, the other 
four being single. The three more or less double muscles arise (as 
in the hand) from the fasciz covering the proximal ends of the lower 
surfaces of the metatarsal bones, and are inserted into sesamoid bones, 
one on each side of the distal end of each metatarsal, the sesamoids 
acting on the proximal phalanges by the connecting tendinous fascize 
(fig. 8, Z, Z, 1). 
The single interosseous muscles are also four in number, as in the 
fore foot. 
The first single interosseous is very large and strong. It arises 
from the inner half of the plantar surface of the metatarsal of the 
index, filling the concavity on the inner and dorsal surface of that 
