Chapter C: MUSCLES OF THE TARSUS.--=M. calcaneometatarsalis= (part of M

adductor minimi digiti?).--A weak muscle made up largely of tendon-fibres, some of which pass directly from origin to insertion. It may be regarded as a ligament.

_Origin_, the lateral and ventral surface of the calcaneus near the proximal end. It passes distad and slightly laterad outside of the quadratus plantæ.

_Insertion_, the lateral side of the base of the fifth metatarsal, and the adjacent surfaces of the cuboid and calcaneus.

_Action._--Probably causes slight motion of the cuboid on the head of the calcaneus.

=M. scaphocuneiformis.=--A small muscle lying on the sole of the foot in the depression between the lateral cuneiform, medial cuneiform, and the lateral tubercle of the scaphoid. It is hidden by the overlying ligaments.

_Origin_, the lateral tubercle of the scaphoid bone. It passes distad and laterad.

_Insertion_, the lateral surface of the medial cuneiform.

_Action._--Rotates the medial cuneiform on the scaphoid and would thus act as an opponens of the great toe if the great toe were present.

THE VISCERA.