PELVIC LIMBS 



725 



- The internal surface is flatter and less undulating from above 

 downward than in the cat. It is free from muscle, and is subcuta- 

 neous except near the upper end, where are attached the sartorius, the 

 gracilis, and the semitendinosus. 



The inferior extremity presents a straight inferior margin, the 

 outer end whereof is not obliquely truncated, but rounded. The sur- 

 face for the fibula is almost at right angles with the inferior surface, 

 and does not slope upward, outward, and backward. The distal artic- 

 ular surface is flat, because the articular surface of the astragalus is 

 less convex. Of the grooves for tendons, only that on the posterior 

 surface of the malleolus for the tibialis posticus and the flexor longus 

 digitorum is distinctly marked (Fig. 551). 



On the superior extremity the tubercle for the patellar tendon is 

 less prominent. The articular surface for the fibula is more posterior. 

 The articular surfaces for the femur are flat and not strongly convex 

 from before backward ; they extend to the anterior margin of the head. 

 The spine formed by the two tubercles for the crucial ligaments is more 

 conspicuous. 



THE FIBULA. 



General Description. The Fibula is the second bone of the 

 leg. It lies on the outer side, behind the tibia and parallel with it 



FIG. 553. 



Vertebral Column. 



Hyoid. 



Clavicle. 

 Sternum. 



'' Patel- 

 la. 

 Ribs. /~P Sesamoicls. 



Metacarpus. 



'Phalanges. 



Metatarsus. 

 Phalanges. 



THE SKELETON OF THE CAT. (LEFT SIDE ONLY.) 



(Fig. 553). It is embedded in the muscles, and can be felt only at its 

 lower end. It is somewhat shorter than the tibia, as it does not reach 



