PALJiOMASTODON PAllVUS. 
167 
These remarks apply likewise to the tibia of P. headnelli. The dimensions (in centimetres) 
of this bone are : — 
Extreme length 38'8 
Width of proximal articulation (for astragalus only) . . . . 11'5 
„ middle of shaft 5’3 
,, distal articulation 6 
The length of the tibia of P. headnelli is 63’5. 
O 
Text-fig. 58. 
Right tibia of Palceomastodon (^) parvus : A, from front ; B, proximal end ; C, distal end. 
as., surface for astragalus ; cw., cnemial crest ; /., /.', surfaces for fibula ; surface for inner condyle of femur ; 
ic.j)., intercondylar process ; i.m., internal malleolus ; o., surface for outer condyle of femur ; p., internal 
distal prominence. 5 nat. size. 
Text-fig. 59. 
Left astragalus of Palceomastodon (?) parvus : 
A, from above ; B, from below. 
ect., ectal facet ; i.m., surface for internal malleolus of tibia; nav., navicular facet ; sus., sustentacular facet; 
tib.j tibial facet. |- nat. size. 
