MYOLOGY OF REPTILES. 



OA] 



the ridge anterior to the outer femoral condyle, and is inserted 

 into the distal phalanx of the hallux and into tlie proximal phalanges 

 of the other toes. The tibialis unticus, figs. 150, 153, 109, arises 

 from the antero-internal margin of the tihia, and is inserted into 

 the til)ial side of the tarsus and first metatarsal. The peroneus, 

 fig. 151, 10, arises li-om the fore part of the fihnla, and is inserted 

 into the cuboid, and fourth and fifth metatarsals. The digit- 

 extensor es breves, figs. 149, 151, iii, arise from the dorsal aspect 

 of tiie second row of tarsals, metatarsals, and proximal phalanges, 

 and are inserted into the ungual phalanges. The extensor jiroyrius 

 hallucis, figs. 152, 15.3, 112, arises from the lower end of the 

 fibula, and is inserted Ijy a bifurcate tendon into the sides of the 

 first plialanx of the hallux. Tlie ahductor hallucis arises from the 

 tendon of the tihiulis unticus, and from the first metatarsal, and is 

 inserted into the base of the proximal phalanx of the hallux. 

 The gastrocnemius, figs. 151, 153, lu, has two heads, one, 114 «, 

 from the outer femoral condyle; the other, wih, from the outer 

 margin of the tiljia, and this receives also the tendon from the 

 semitendinosus : it is inserted into the calcaneum and ex])anded 

 metatarsal of the filth digit, and is continued into the plantar 

 fascia. The plantaris, fig. 153, 115, arises above the outer femoral 

 condyle, and coalesces with the se/leus, fig. 152, lie, and the digiti- 

 Jiexor longus, 117, to termhiate in a common aponeur(,>sis, attached 

 to both sides of the tarsus, and dividing, as in fig. 157, 117, to be 

 inserted into the ungual phalanges. The ddgitiflexores breves, 

 fig. 157, 118, are four in number, arise from the tarsus, and are 



157 



Musclos of liind-foot, Eiidj^ Europfru. XXXYIII. 



inserted into the sides of the middle plialanx, and iDy a slender 

 tendon into the ungual phalanx, of the four outer toes. The 

 tibialis posticus, figs. 152, 158, 119, arises from the inner and back 

 part of the fibula, and expands into an aponeurosis, including a 

 sesamoid, which divides to be inserted into the second row of 

 tarsals, and the metatarsals of the hallux and fifth digits. The 



VOL. I. K 



