6 
TABLE OF CONTENTS. 
HISTOEICAL SKETCH 101 
STAFF OF THE NATURAL HISTORY BRANCH OF THK 
BRITISH MUSEUM 107 
SELECTED LIST OF PUBLICATIONS 108 
GUIDEBOOKS .. 116 
REGULATIONS FOR ADMISSION OF STUDENTS 117 
NUMBER OF VISITORS TO THE MUSEUM 118 
DAYS AND HOURS OF ADMISSION TO MUSEUM on back of cover. 
Skull of a new extinct mammal, Arsinoitherium Zitteli, recently brought from the 
Upper E'jcene of the Western Desert, Egypt. The skull is three feet long. 
