1870.] MYOLOGY OF CHAMZLEON PARSONII. 883 
gastrocnemii are inserted, and which gives origin to the flexor brevis 
hallucis. The tendons, however, are superficial to the insertion of 
the tibialis posticus. 
Lumbricales (fig. 29). There appear to be four of these. 
The first from the tibial side of the fifth flexor tendon to the 
peroneal side of the fourth digit. 
The second from the tibial side of the fourth flexor tendon to the 
tibial side of the fourth digit. 
The third from the peroneal side of the third flexor tendon to the 
peroneal side of the third digit. 
The fourth from the tibial side of the third flexor tendon to the 
tibial side of the third digit. 
Tibialis posticus (figs. 20, 23, & 24, T. P). This arises, by mus- 
cular fibres, from the postero-tibial aspect of the fibula below the 
origin of the flexor longus tertius, tibiad of the insertion of the ilio- 
peroneal, and within (7. e. peronead) and partly above the origin of 
the peroneo-tibial. Passing downward, its strong wide tendon lines 
the groove, behind the tarsus, in which the flexor tendons run. It 
is finally inserted into the postero-inferior margin of that cup for the 
front of the central tarsal bone which is formed by the proximal 
ends of the fourth and fifth metatarsals. The tendon of insertion 
passes superficially to the very strong ligament which binds together 
the second and fifth metatarsals. 

Deeper front view of right leg. 
B3-B°. Bxtensores phalangorun. E' & LE, E®, Extensores metatarsorum. HH. L. 
Extensor longus digitorum. F.H. Flexor hallucis. P’. Peroneus. PP. 
Popliteus. P. 7. Peroneo-tibial. 7. A. Tibialis anticus. 
