400 ORTMANN — DISTRIBUTION OF DECAPODS. [April 3, 



It is a very remarkable fact that the interoceanic connection of 

 the Mediterranean and Pacific type of marine faunas, existing in 

 Western and Southern Asia (Tethys and Strait of Bengal), was 

 ended at about the same time, in the Miocene, by the elevation of 

 Western Asia and its union with Africa and Europe. 



Princeton University. 



