270 ON PLATYGONUS COMPRESSUS : 



looks backwards, but not at all inwards ; its length is five times 

 greater than its breadth. Anteriorly the groove (c) is very deep ; 

 the face for the metatarsal (d) is subtriangular, with rounded an- 

 gles, the internal angle being more produced ; the inner side of 

 this articular face is slightly emarginate, but there is no fovea under 

 the emargination, as in Sus : the prominence (Ji) is furnished with 

 a narrow, oblique, articular face, for a rudimentary external meta- 

 tarsal. Internally is (e) an oblong tubercle, with an acute edge ; 

 the posterior face of this tubercle is articular for the scaphoides ; 

 at the inferior part of this surface is (/) a long irregular articular 

 surface, also for the scaphoides ; it is emarginate superiorly, with a 

 depression at g. The superior surface of the bone, owing to the 

 extension of the calcaneal face in an anterior direction, is shaped 

 somewhat like the small Greek n, and has an elevated line parallel 

 to the anterior margin. 



The medial metatarsal of the right side (figs. 23, 24) has a tri- 

 angular shaft, the external and posterior faces flattened, and meet- 

 ing almost perpendicularly, the other face being rounded almost in 

 a quadrant ; the line between the posterior and internal or curved 

 face is strongly marked above, but fades out at g (fig. 23) ; the 

 line between the posterior and internal (a, «) is more strong below, 

 but becomes obsolete above, where it tends towards the anterior 

 process (e, e) ; tjie anterior edge (/) is well marked for the whole 

 length of the bone. The upper extremity is articular for the large 

 cuneiform, with a small surface at the internal angle for the second 

 cuneiform ; the line in which these unite is very indistinct, and 

 commences at the cusp (d). The large articular face is concave 

 towards the antero-internal part, and there extends much lower on 

 the bone (vid. fig. 24). The anterior angle of the upper extremity 

 of the bone is produced into a curved truncate process, furnished 

 with two articular facets (e, e'). The posterior internal angle is 



