. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. MUSEUM OF COMPARATIVE ZOOLOGY. 79 The tibia has a large trihedral head, with large external and small internal surfaces for the femoral condyles, and prominent bifid spine. The cnemial crest is very well developed, and just posterior to it on the external side is a very deep tendinal sulcus. The shaft is quite long and stout, with oval section and broad distal end. The surfaces for the astragalus are deeply incised, and the external one is somewhat the larger. The tongue is broad and thick, corre- sponding to
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. MUSEUM OF COMPARATIVE ZOOLOGY. 79 The tibia has a large trihedral head, with large external and small internal surfaces for the femoral condyles, and prominent bifid spine. The cnemial crest is very well developed, and just posterior to it on the external side is a very deep tendinal sulcus. The shaft is quite long and stout, with oval section and broad distal end. The surfaces for the astragalus are deeply incised, and the external one is somewhat the larger. The tongue is broad and thick, corre- sponding to the breadth of the groove in the astragalus. The internal malle- olus is very long, and forms a tongue-like projection from the antero-internal corner. The fibula is as completely reduced as in any ruminant. The proximal- end is ankylosed with the tibia, where it forms a short sharp process. The distal end is not represented in any of the specimens, but from the structure of the tibia it is plain that it was a small nodule wedged in between the distal end of the tibia and the fibular process on the calcaneum. Between the two distal fibular facets of the tibia is a groove for the reception of the rudimentary shaft. The carpus is like that of recent deer; the bones of the proximal row are high and narrow, those of the distal row low and broad. The scaphoid is deep antero-posteriorly, and broader in front than behind, where it is much narrowed by the great lateral exten- sion of the lunar; the proximal surface is directed very obliquely backwards and inwards, and is deeply incised so as to form a very firm interlocking joint with the radius ; this facet is divided into a strongly. convex anterior portion, and an as strongly concave posterior portion. The lunar is curiously shaped; it is broadest in front and behind, and contracted in the middle; the anterior surface is transverse, the poste- rior very oblique. The radial surface is directed ob- liquely inwards parallel to that of
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
