314 MYOLOGY OF CHLAMYDOSAURUS K1NGI1, 



the tibial lumbricalis, and running along the tibial edge of the 

 lower surface of the third toe is inserted into the base of the 

 penultimate phalanx. 



Second or median ; — gives off a perforated tendon which, after 

 receiving the tendon of an accessory rising from the deep surface 

 of the perforans, re-unites, and is inserted into the tibial side of 

 the base of the penultimate phalanx of the first toe. 



Third or tibial division. The tendon is perforated, and em- 

 bracing the perforans is inserted on either side of the base of the 

 penultimate phalanx of the hallux. 



Flexor longus (fig. 7 — f. 1. d.) — Fleshy from the outer femoral 

 condyle between the tendinous origins of the glutseus externus and 

 peronseus primus, and fleshy from the middle third of the fibula; 

 its tendon when splitting up on the sole receives the whole of the 

 tibial division of the plantar accessory. It has beneath each 

 tendon a flat fleshy belly which rises immediately after its separa- 

 tion ; these bellies are attached fleshy to the base of the proximal 

 phalanx of the second and fourth toes ; the flexor tendons go to 

 the last phalanx of each of the five digits. The outer or fibular 

 tendon passes under the edge of the outer (second) division of the 

 lumbricales ; receives the equal sized tendon of the outer division 

 of the plantar accessory, and proceeds to the base of the terminal 

 phalanx of the fifth digit. 



Peronceus primus (fig. 7 — p. 1.) — By thin tendon from the outer 

 femoral condyle and a strong carneotendinous origin from the head 

 of the fibula ; inserted by a strong round tendon which runs in a 

 synovial sheath in a groove at the back of the outer malleolus, and 

 is inserted into the outer edge of the fifth metatarsal. 



Peronceus secunclus (fig. 7 — p. 2.) — From the anterior outer 

 aspect of the fibula nearly throughout ; inserted by a strong tendon 

 into the fifth metatarsal proximad of the primus. 



Tibialis anticus (fig. 7 — t. a.) — Fleshy from the lower four- 

 fifths of the tibia : the upper portion is more on the outer, the 

 lower more on the inner aspect of the front of the bone ; 

 inserted by a broad thin tendon, given off by its fore edge, into the 

 proximal third of the metatarsal of the hallux. 



