. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ANATOMY 01' VERTEBRATES. 191 intcrs})ace into the ' obturator foramina,' and becoming ossified in old IMonitors. The femur resembles that of the Crocodile, but with the imicr trochanter better developed, with a larger medullary cavity, and with a more marked depression on the outer condyle lor the fibidar articulation. The division ol' the back jiart of the head (jf the tibia is usually more marked. The head of the hbula, fig. 122, 07, b, rises higher than in the Crocijdile. In Varmms niloticuis,^ the elongated iliac ['t
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ANATOMY 01' VERTEBRATES. 191 intcrs})ace into the ' obturator foramina,' and becoming ossified in old IMonitors. The femur resembles that of the Crocodile, but with the imicr trochanter better developed, with a larger medullary cavity, and with a more marked depression on the outer condyle lor the fibidar articulation. The division ol' the back jiart of the head (jf the tibia is usually more marked. The head of the hbula, fig. 122, 07, b, rises higher than in the Crocijdile. In Varmms niloticuis,^ the elongated iliac ['tiviBnf uiosinnitor bone alnits against the transverse processes of the two sacral vertebra, the first on the right side and the second on the left side being applied on a plane higher than the opposite processes: that of the first caudal vertebra also abuts against the ilium on the left side. The ilium sends off a tuber- osity in front of the sacro-iliac syndesmosis, and it joins the puljis and ischium Ijy a broad suture. The trochanter arises from the inner and back part of the proximal end f»f the shaft of the femur. There are two ossified patelhc in the tendon of the great extensor of the leg. The tarsus differs from that of the Crocodile chiefly in there being a ' mesocnneifonn' supporting the second metatarsal, fig. 122, ii: but this is wanting in many lacertians. The bone ci is as composite as in the crocodile. The fifth meta- tarsal is flattened, and articulated farther Ijack than the rest, extending along the outer side of the cuboid, c, to the calca- neum, U: it supports an imguiculate toe of fjur phalanges, fig. 122, 71: the number of jihalanges in the other toes progres- sively increases from two in the first, i, to five in the fourth, io, with proportionate increase of length. The chief modification of the hiiid limb of Lacertians is fijund in the Chameleon, fig. 123. The ilinm is a simple elongate, subcomprcssed bo)ie descending vertically from the converging ends
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1860
