174 



Poiterior Extremity. 



Pelvis. 

 From the spinous process of the sacrum to the anterior supe- ") 



rior spine of the ilium . . . . . . .J 



From the anterior superior spine of the ilium to the acetabulum 



anterior 1 



part of the symphysis pubis ..... J 



Antero-posterior extent of the ilium ..... 



Lateral extent of the ilium ....... 



Longest diameter of the acetabulum ..... 



Vertical diameter of the ischiadic foramen . . • . 

 Transverse diameter of ditto ...... 



Length of the dorsal surface of the anchylosed sacrum 



From the superior edge of the acetabulum to the symphysis pubis 



Depth of the symphysis pubis ...... 



Breadth of the pubis from its anterior edge or brim to the T 



obturator foramen ....... J 



Shortest diameter of obturator foramen . . . . . 



From the outer or extreme point of the ilium to the tuberosity T 



of the ischium ....... J 



Breadth of the ischium where it joins the sacrum 



From the extreme point of the ilium to the anterior edge of "1 



the symphysis pubis ...... J 



The antero-posterior diameter of the pelvic aperture 

 Transverse diameter of ditto at the brim of the pelvis . 

 Transverse diameter of the pelvic aperture at the outlet . 



Femur. 

 Greatest length from the extremity of the head of the femur ") 



to the lower surface of the inner condyle . 

 From the top of the great trochanter to the lower surface of 



the outer condyle ..... 



Greatest circumference of the head of the femur . 

 Circumference of the neck of the femur .... 

 Circumference of the upper part of the femur over the great T 



trochanter ........ _J 



e of") 



Mylodon. iMegatherium*. 



ft. in. lines. ft. in. lines. 





 9 



2 2 





 

 .3 

 5 



2 





 6 

 6 







7 





 6 

 3 



1 7 



18 7 



15 



15 6 



2 2 



3 

 1 6 6 

 3 4 



1 10 



2 3 



10 



10 2 



5 2 

 3 3 



1 6 



2 8 



1 



o 



6 



2 











1 



1 







1 



2 







1 



3 



9 



1 



6 







2 4 6 



2 3 



2 

 1 10 



3 2 



* The remaining dimensions of the Megatherium, with the exception of those of the entire foot, 

 are taken from the specimens in the Museum of the Royal College of Surgeons. 



