150 ESCHRICHT AND REINHARDT ON THE GREENLAND RIGHT- WHALE. 



or lower border is of the same length ; this causes the distal articular surface to have a different 

 direction in the two bones. 



The pelvic bones have each a single accessory bone (femur). If a third bone existed it must 

 have been removed on both sides in preparing the skeleton. The main bone of the right side 

 was thirteen and a quarter inches long, the accessory bone being six and a half; the left principal 

 bone {a) was fourteen inches long, the smaller one ((5) five and a half. As these interesting bones 

 differ somewhat in appearance from those figured in the memoir (Plate II, fig. 4), I insert, for 

 comparison, a woodcut of the outer surface of the bones of the left side in their natural relative 

 position. 



