52 



Species. 



Brought over . . . . 1 94 



In the Equatorial Seas of America, 2 of which are common to the 

 Indian Ocean . . . . . .7 



In the Pacific Ocean . . . . . .2 



203 

 Number common to different localities 27 



176 



Eocene Epoch, 42 species, of which 26 are common to the 

 two preceding epochs. 



In the Mediterranean, 5 of which are common to India and New 

 Holland . . . . . .19 



In the Indian Ocean ..... 7 



In New Holland ...... 3 



In Senegal ....... 3 



32 



Of the fluviatile and terrestrial species, 5 are still living in Europe, 

 1 in the Philippine Islands, and 4 in Asia, Spain and Greece 1 



42 



