The Muscles 125 



post, and pb. is. f. m. post.) (Adductus [partim], 

 Gemellus, Obturator internus). Springs without 

 tendon from the whole caudally directed border of 

 the ischium. It is inserted, by a short tendon, 

 near and laterad to the tendon of the ischio-femo- 

 ralis muscle, on the hinder surface of the upper leg. 



Extensor Longiis Digitoritm (Plate V., Figs. 2 and 

 3, ext. 1. [long.] dig.) (Long extenseur commun, 

 Gemeinschaftlicher Fussheber oder Beuger, Exten- 

 sor communis digitorum). Springs, together with 

 the tibialis anticus, from the external condyle of 

 the femur, goes with this muscle under the liga- 

 mentum tibio-fibulare and after union with this 

 divides into four short tendons. Three of these 

 tendons are inserted on the fibular side of the bases 

 of the first three metatarsal bones; the fourth goes 

 over into the muscle of the third toe. 



Tibialis Anticus (Plate III., Fig. i, tib. ant., 

 Plate IV., Fig. 4, tib. ant., Plate V., Figs. 2 and 3, 

 tib. ant.) (Jambier anterieur, Vorderer Schienbein- 

 muskel). Springs by a fleshy tendon from the 

 anterior surface of the head and neck of the tibia 

 and quickly unites with the following muscle. 



Peroneus Anterior (Plate V., Figs. 2 and 3, peron. 

 ant.) (Peroneus longus). In the alligator. Its 

 origin: it extends from the insertion of the ilio- 

 fibularis muscle distalwards by the whole outer 

 surface of the fibula, under the skin and over the 

 ligamentum tibio-frbtilarc, and gives off a broad, 

 tendinous portion to help strengthen the tendon 



