FEOG 219 



that it consists of three consolidated bones, (1) the 

 ilium, running nearly parallel to the urostyle, 

 and forming with its posterior end more than 

 half of the anterior portion of the disk-like mass 

 lying between the heads of the thigh-bones ; (2) 

 the ischium, forming the greater part of the 

 posterior half of the disk-like mass ; and (3) the 

 pubis, forming the ventral portion of the disk. 

 What is the shape of the ilium ? Note the prom- 

 inent iliac crest. How far does it extend? 

 Where is it widest ? How is the ilium attached 

 to the sacrum? Note the acetabulum, into 

 which the head of the thigh-bone fits. How is it 

 'formed ? What is its shape ? Diameter ? What 

 is the shape of the ischium ? Of the pubis ? 

 Make a drawing showing a side view of the left 

 side of the pelvic girdle. 



/. The hind limb. — Compare the thigh-bone or femur 

 with the humerus. What differences do you find ? 

 Note the nutritive foramen, near the middle 

 of the shaft of the femur. What range of motion 

 has the femur? Compare the acetabulum with 

 the glenoid cavity. Draw the femur. Compare 

 the bone, the tibio-fibula, of the leg or crus 

 with the bone of the forearm, and note the re- 

 semblances and differences. Draw. Compare 

 the knee-joint with that of the elbow as to 

 structure and range of motion. Note that the 

 ankle or tarsus consists of two rows of bones, 

 of which two bones, the astragalus on the in- 

 side and calcaneum on the outside, unite with 

 the tibio-fibula and several other smaller bones. 

 Compare the other tarsal and the metatarsal 



