316 MYOLOGY OF CHLAMYDOSAURUS KINGII, 



Peroneo-tibialis (fig. 7 — ptb.) — A small pronating muscle 

 descending from about the lowest fifth of the fibula to the tibia ; 

 on to the anterior surface of which it is inserted. 



Supinator pedis. — A delicate band rising beneath the tibialis 

 posticus fleshy from the posterior side of the fibula ; inserted by 

 tendon into the middle of the outer side of the outer malleolus. 



Lumbricales (fig. 9 — 1. 1 & 2). — Are merely two small bundles 

 rising from the third and fourth perforating tendons. The smaller 

 is inserted on the inner side of the third tendon. The larger and 

 fibular division sends a slender tendon with the perforans to the 

 tibial side of the base of the penultimate phalanx of the fourth toe. 



Flexor accessorius (fig. 9 — f. a. 1). — In three divisions — 



1st. (fig. 9 — f. a. 1). — Rises from the os calcis, and is inserted 

 into the flexor longus tendon on its peronoeal side before it splits 

 up on the sole. 



2nd. (Plate xvi., fig. 9 — f. a. 2). — From the inner and concave 

 surface of the fifth metatarsal nearly to its distal end. Beneath it 

 proximad runs the tendon of No. 1, and beside it lies the belly of 

 the flexor minimi digiti ; its insertion is into the tendons of the 

 digits from the second to the fourth. 



3rd. (fig. 9 — f. a. 3), — By a long round tendon from the 

 external lower angle of the os calcis ; resting on the concave surface 

 of the metatarsal it winds round inwardly and downwards to the 

 inner side of the fifth metatarsal. 



Flexor minimi digiti. — Rises above the No. 2 preceding, on the 

 tibial aspect of the ridge of the metatarsal, and is inserted by 

 tendon into the tibial side of the base of the first phalanx. 



Abductor hallucis. — Rises from the cuboid, and is inserted into 

 the first phalanx of the hallux. 



Abductor metatarsi quinti. — Rises by a short stout semi- 

 tendinous origin from the distal end of the calcaneum, and is 

 inserted fleshy into the distal tuberosity of the deep surface of the 

 fifth metatarsal. 



