54 Bulletin American Museum of Natural History. [Vol. X, 



belong a femur, tibia and fibula, astragalus, calcaneum and cuboid 

 of one side, several metacarpals and metatarsals and two cervical 

 vertebrae. The selection of the other limb and foot-bones was made 

 from these as a guide. 



Similarly about 300 feet distant were found the principal ribs 

 which have been selected for this mount, characterized by the 

 very rugose appearance and oblique lines for the insertion of the 

 abdominal muscles {sacio-lumbalis,longissi}iiiis dorsi). Near these 

 ribs were large jaw and limb-bones corresponding in size with 

 those placed in the mounted skeleton. Apart from these proba- 

 ble associations, the main principle of selection adopted through- 

 out has been that of the age and size standard, after a careful 

 comparison of all the elements. In each region the largest and 

 oldest bones were chosen. Upon this principle the ribs are shown 

 to be of very great length ; the chest girth exceeds that indi- 

 cated in the Scott-Osborn restoration, and equals that in the 

 mount in the Kansas Museum, which has heretofore appeared 

 extreme. In additional support of this correlation of material 

 belonging to different individuals, this bone-bed gives evidence 

 of the existence of only one species of Rhinoceros, namely, 

 T. fossiger. All the differences observed are due to growth, 

 individual and sexual variations, as set forth below. 



The following description is supplementary to the very full 

 statements of the skeletal characters of T. fossiger made by 

 Osborn in i8go. 



Description of Mounted Skeleton. 



(Museum Catalogue Number, 2604.) 



Mounting. — The composite skeleton shown in the accompany- 

 ing plate (Plate IV) has been mounted with remarkable skill by 

 Mr. Adam Hermann, preparator. All the bones are traversed by 

 small steel rods, rendering them firm and solid and the limbs self- 

 supporting. As shown in the photograph, the only visible parts 

 of the metal framework are the two uprights for the shoulder and 

 skull, and pelvis. The bones are in a beautiful state of preserva- 



