THE HIND FEET. 161 



Measurements of Left Ectocuneiform. {Dinoceras mirabile, No. 1208.) 



m. 



Greatest diameter of ectocuneiform, _ 055 



Transverse diameter, .- 035 



Antero-posterior diameters, _ .016-021 



Diameters of proximal articular face, - .028-039 



Ileasiirements of Left Ectocuneiform. {Dinoceras mirabile. No. 1232.) 



m. 



Greatest diameter of ectocimeiform, .064 



Transverse diameter, .044 



Antero-posterior diameters (axial), . _ .. - .014-022 



Diameters of proximal articular face, .. .032-046 



The First Metatarsal. 

 (Plate LT, figures 1-6, and Plate LIV, figure 2.) 



The first inetatarsal bone of the Dii/ocerafa is the slu)rtest and smallest 

 of the five, but is comparatively much better develo})ed than in the 

 elephant. 



The first metatarsal in Dinoceras inirahile is short and stout, and 

 strongly roughened on all sides throughout its length, as seen in Plate LT, 

 figures 1-4. As in the otlier metatarsals preserved, thei'e are no distinct 

 indications of e])iphysial sutures. 



This bone does not appear, during life, to have been in very close 

 relation with the adjoining metatarsal, and accordingly presents, on its 

 proximal end (figure 5), only a single articular surface, which is distinctly 

 saddle-shaped, and joined the entocuneiform. 



The distal end (figure (>) presents a flattened, and somewhat concave, 

 face for the first phalanx, and immediately below this, are grooves for a 

 pair of sesamoid bones. 



The Second Metatarsal. 

 (Plate LI, figures 7-12, and Plate LIV, figure 2.) 



The second metatarsal in Dinoceras is the most robust of the series, 

 and is a short, aixl very stout bone. 



The surface of the shaft, as seen in Plate LI, figures 7-10, is 



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