762 MAMMALIAN ANATOMY 



and fibular side of the distal surface of the scaphoid. It is concave 

 from above downward, and also slightly concave from side to side. It 

 does not lie throughout in one plane, but is twisted in such a manner 

 that, while the dorsal part faces toward the heel and slightly to the 

 tibial side, the plantar part faces toward the heel and the fibular side. 



FIG. 578. 

 Plantar Side. 



Tibial Side. ^BPn\ Fibular Side. 



With Scaphoid.- 



Dorsal Side. 



LEFT ECTOCUNEIFORM, PROXIMAL SURFACE. 



The dorsal surface (Fig. 558) is almost square ; the proximo- 

 fibular angle is a little sharper than the others. All four margins are 

 well marked ; the distal is straight, the others may be faintly emargi- 

 nate. The surface is convex from side to side, and rough for the 

 attachment of part of the extensor brevis digitorum muscle. 



The distal surface (Fig. 579) is in general triangular, often T- 



FIG. 579. 

 Dorsal Side. 



With Third Metatarsal. 



1 



Tibial Side. I ^^^J Fibular Side. 



Plantar Side. 



LEFT ECTOCUNEIFORM, DISTAL SURFACE. 



shaped. It consists of a dorsal oval part, about twice as wide as high, 

 and a narrow, nearly vertical strip, which runs to the tibial side as 

 well as toward the sole of the foot ; its plantar extremity is more or 

 less expanded transversely. The dorsal border is arched from side to 

 side, and turns around into the two side margins, whereof the fibular 

 is the longer and runs down obliquely to the tibial side. Its dorsal 



