Zoological Society. 531 



from the internal side of the triceps ; the third, from the inferior por- 

 tion of the intero-anterior ridge of the tibia ; the fourth, from the in- 

 ferior internal edge of the patella 5 these two last join just below the 

 origin of the third, and passing down tendinous are united to the two 

 other tendons a little above the ancle-joint : it expands and flattens 

 at the joint, and just below it divides into two tendons, the internal of 

 which is inserted into the internal edge of the groove on the plantar 

 surface of the metatarsal bone, while the external tendon is inserted 

 into the external head of the same bone. Another muscle arises 

 from the postero-inferior part of the cotyloid cavity, passes forwards 

 on the exterior part of the thigh and over the groove on the patella, 

 and is attached on the interior part of the head of the tibia. The 

 tendon of the Jlexor perforatus is composed of four muscles, which 

 unite just above the ancle-joint. The first arises by two heads, one 

 from the outer surface of the external, and the other from the inner 

 side of the internal condyle ; about the end of the upper third of the 

 tibia this forms a tendon, which passes down to the place of junction 

 with the others : the second has also two heads, one from the pos- 

 terior part of the head of thejibula, and the other immediately be- 

 low the attachment of the glutaus maximus ; the muscle forms its 

 tendon just below the middle of the bone, and passes forwards and 

 joins that of the first muscle : the third has one origin between the 

 two condyles, and forms its tendon at the middle of the leg, passing 

 on and joining the two former: the fourth muscle arises immedi- 

 ately above the third, and forms its tendon like the rest, joining them 

 above the ancle : after the tendons are united they are distributed 

 as usual. The Jlexor perforans consists of two heads ; the first arises 

 from the back part of both condyles ; the second arises from the 

 superior and posterior third of the tibia, fibula, and interosseous liga- 

 ment : they unite about halfway down the bone and form a tendon, 

 which passes in the groove of the plantar surface of the metatarsal 

 bone, and is distributed in the usual manner. A muscle arises from 

 the scabrous surface situated on the internal part of the posterior 

 face of the tibia about halfway down that bone, and forms a tendon 

 which is attached to the upper part of the internal edge of the groove 

 in which runs the tendon of the perforans. Another muscle arises 

 from the external condyle, from the patella on its anterior surface, 

 and from the fibres of the rectus femoris ; it covers the tibia and fills 

 up the space between it and thejibula, and forms a tendon which 

 passes through thejbramen situated at the anterior surface of the 

 tibia between its condyles, under the capsular ligament of the ancle- 

 joint, and is attached to the prominence situated between the second 

 and third portions of the metatarsal bone near its tibial extremity. 



" A muscle arises from the anterior and external parts of the head 

 of thejibula; it becomes tendinous about halfway down the leg, 

 passes under the annular ligament, and is inserted into the external 

 side of the metatarsal bone near its postero-inferior angle : another 

 slip goes under the foot and forms the plantar fascia. Another 

 muscle arises from the anterior inferior surface of the patella, and 

 from the whole of the fossa and its edges on the head of the tibia, 



