20 



The pelvic girdle. 



Note that all three portions of the girdle enter into the acetahulum, the ilium 

 forming the largest (J), and the pubes the smallest segment (^). 



Examine — (a) The Uia, noting the crests, and that the two bones held apart in 

 front by the long processes of the sacrum unite behind to form an iliac sym- 

 physis ; (&) the ischia fused together and forming a median crest ; (c) the 

 pubes, represented by a small triangular piece of cartilage. Make a drawing 

 (2 nat. size) showing the pelvic girdle from the side. 

 , The hind-limb. 



Examine the hind-limb, noting — 



(a) The long slender curved femur with a spherical head and a laterally 



expanded lower end. 



(b) The tibio-fibula, longer than the femur but less curved, and with both 



ends expanded and a distinct groove indicating the line of union of 

 the two bones. 



(c) In the tarsal region — 



(1) The greatly elongated tibiale (artragalus) and fibulare (calcaneum), 



separate in the middle but connected above and below by 

 epiphyses. 



(2) The small distal tarsals and the nodules which support the spur. 



(d) In the foot — 



The five complete digits ; the I. (hallux) and II. with two phal- 

 anges each, the III. and V. with three each, and the long 

 IV. digit with four phalanges. 

 Make a sketch of the hind-Hmb (nat. size) and of transverse sections of 

 the femur and tibio-fibula (2 nat. size). 



