. Annales du Musée de l'Afrique du Sud  = Annale van die Suid-Afrikaanse Museum. L'histoire naturelle. Études Pareiasaurian.-La Partie VI. 357 surface gonflée de l'ilium et pubis. Il n'y a aucune indication d'une étagère comme dans Diadectes, Cryptobranchus, etc. Le muscle est inséré sur le tiers proximal du fémur sur sa face dorsale et surface préaxiale. Comme dans Dimetrodon, il semble que le muscle était divisée à son in- sertion dans (1) une dorsale, et (2) une partie préaxiale. Les deux surfaces de l'insertion sont séparés par le bord dorso-accentuation préaxiale. (1) La surface dorsale est une gorge peu profonde allant de la partie proximale de l'ed

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. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Pareiasaurian Studies.—Part VI. 357 swollen surface of the ilium and pubis. There is no indication of a shelf as in Diadectes, Cryptobranchus, etc. The muscle is inserted on the proximal third of the femur on its dorsal and preaxial surface. As in Dimetrodon, it appears that the muscle was divided at its in- sertion into (1) a dorsal, and (2) a preaxial part. The two surfaces of insertion are separated by the dorso-preaxial edge. (1) The dorsal surface is a shallow groove running from the proximal edge and fading away distally on the rounded dorso-preaxial surface of the shaft, where it is confluent with the area of origin of the femoro- tibialis. Postaxially the surface is bounded by a ridge situated in. CL. & Text-fig. 56.—Femur of Embrithosaurus schwarzi, showing muscle attachments. (a) Ventral, (b) Dorsal, (c) Anterior. the medio-longitudinal plane of the femur. This ridge ends distally at the proximal third of the bone, where it forms a prominent rugosity —to which, as in some extant lizards, a tendon was probably attached. Preaxially it is proximally separated from the preaxial surface by a triangular surface, which is more distinct in some femora than in others. More distally the two areas are confluent. (2) This portion of the insertion apparently occupies the whole of the proximal third of the preaxial surface. Distally it is confluent with the dorsal portion, where they are not clearly demarcated from the area of origin of the adductor. Ventrally this surface does not stretch on to the preaxial surface of the internal trochanter. In Propappus, Brachypareia, and Pareiasuchus, where the proximal end of the femur projects much more preaxially, both the surfaces lie more preaxially than in the other forms.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance o

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