viii THE VOYAGE OF H.M.S. CHALLENGER. 



considerable number of other Mammals, collected by the Challenger in various 

 parts of the world, were placed at his disposal for dissection. 



In this way what was originally intended to be limited to a Report on the 

 Anatomy of a few rare Marsupials, now embraces in addition a . valuable 

 research on the Comparative Anatomy of the Mammalian foot. 



These Reports form respectively Parts XIV. and XVI. of the Zoological 

 series of Reports. Part XV. of this Series — Report on the Actiniaria of the 

 Expedition, by Professor Richard Hertwig — will appear in the next Zoological 

 volume. 



John Murray. 



