Isthmus Barriers Separating Fish Faunas 265 



/. West Indies and Paiiaiua. 

 Genera chiefly confined to equatorial America . 68 

 Genera of wide distribution loi 



Total genera common 169 



Total in equatorial America 376 



/. Hawaii and Panama. 



Genera chiefly confined to the regions in ques- 

 tion 9 



Genera of wide distribution 74 



Total genera common 77 



Total in both regions 323 



K. Hawaii and tlie East Indies. 



Genera chiefly confined to Hawaii 4 



Genera of wide distribution in the equatorial 



Pacific 123 



Genera confined to Hawaii and the West In- 

 dies I 



Suniinary. 



Genera (shore fishes only) in the Mediterra- 

 nean Sea 144 



Genera in the Red Sea 191 



Genera in India 280 



Genera in Japan (exclusive of northern forms) 334 



Genera in Australia 344 



Genera in New Zealand 108 



Genera in Hawaii 144 



Genera about Panama 256 



Genera in West Indies 299 



Extension of Indian Fauna. — From the above tables it is evi- 

 dent that the warm-water fauna of Japan, as well as that of 

 Hawaii, is derived from the great body of the fauna of the East 

 Indies and Hindostan ; that the fauna of the Red Sea is derived 

 in the same way; that the fauna of the Mediterranean bears 

 no especial resemblance to that of Japan, rather than to other 



