

TvaZZuycis. 





Fig. 63. — Outer aspect of left pelvic limb of a Raven, sliow- 

 iiig the second layer of muscles. The crurwics 

 and vasttis extcrn.us are somewhat parted at their 

 lower moieties, and the biceps drawn a little to the 

 rear to show its passag;e through the tendinous 

 loop. Life-size, by the author, from his own 

 dissections. 



