176 



The colossal proportions of certain bones of the Megatherioid quadrupeds are strikingly 

 shown by being contrasted with the same parts in a full-sized male Indian Elephant, as, for 

 example : — 



The breadth of the entire pelvis .... 



Breadth of the largest caudal vertebra 



Breadth of the distal end of the humerus . 



Circumference of the middle of the fore- arm . 



Circumference of middle of femur 



Circumference of the middle of the bones of the leg . 



Length of os calcis ...... 



Mylodon. 



Mega- 

 therium. 



Elephant. 



ft. in. lines. 



ft. in. lines. 



ft. in. lines. 



3 5 



5 1 



3 8 



10 5 



1 9 



070 



0/4 



1 3 



10 6 



1 1 





1 3 



1 3 9 



2 2 



1 



1 2 



2 



1 1 



7 5 



1 5 



7 e 



