HIND-LIMB. 145 



and inserted by a broad tendinous expansion into all the 

 digits. The plantaris is small, and rises from the inner 

 surface of the fibula, it is inserted upon I. The popliteus 

 (pronator tibiae) rises from the fibular process and is inserted 

 upon the hinder margin of the tibia. 



Huge, Morph. Jahrb., Bd. iv. 1878, p. 593. 



C. 200. Superficial muscles of the left hind-limb of a Spiny 

 Anteater ( Tachyglossus [Echidna] aculeata} . The limb is 

 excessively muscular (the creature is said to be able with 

 ease to push out of its way stones of 30 Ib. weight). The 

 muscles for the retraction of the thigh and flexion of the knee 

 are the groups most strongly developed. The power of 

 flexing the knee in particular is increased by the insertion 

 of the gluteus maximus and biceps in the middle of the 

 shank. The origin of the gluteus maximus is restricted to 

 the posterior sacral and anterior caudal vertebrae the muscle 

 is separable into three bundles, two inserted into the fibula, 

 the third upon the tibia just distal to the gracilis. There 

 is no tensor fasciae latas. The sartorius rises from the 

 pectineal process. The extensor muscles of the digits lie in 

 the same plane and cannot, as in Ornithorhynchus, be 

 separated into extensores longi and breves. 0. C. 64 z b. 



C. 201. Deep muscles of the right hind-limb of a Spiny Anteater 

 (Tachyglossus [Echidna] aculeata). The rectus femoris 

 agrees with that of Ornithorhynchus in having only one 

 head of origin. The plantaris is larger than in Ornitho- 

 rhynchus but similar in other respects. The peroneus 

 brevis is absent. 0. C. 64 zc. 



Westling, Bihang Svenska Vet. - Akad. Handlingar, 

 Stockholm, Bd. xv. 1889, p. 30. 



C. 202. Proximal part of the right hind-limb of a Bennett's 

 Wallaby (Macropus ruficollis}, showing the superficial 

 muscles. The thigh muscles are large and powerful, 

 especially the rectus femoris, vastus externus, femoro-coccy- 

 geus, and biceps. The latter muscle is closely connected 

 with the femoro-coccygeus ; it has an additional head 

 which rises from some of the anterior caudal vertebras and 



L 



