30 lyirxODrcTiox to coycHOLOGY. 



ATI f res aboiincl. In the Philippiue islands^ where Mr. 

 Ciiming collected between two and tliree hundred species^ 

 scarcely a VoIuPj was to be seen. 



MdrgineU<B are mostly found within the tropics ; while 

 the Terebm cliiefly inhabit the eastern world, and are pecu- 

 liar to warm temperatures, one species only reaching so far 

 north as the Mediterranean. 0/ires are exclusively confined 

 ^ntliin tropical regions ; and the Xassce ivre equally restricted 

 to the southern and tropical portions of the globe. 



The Magilu^ especially effects the shores of the Red Sea ; 

 the Harjhs those of Ceylon, the Mauritius, and the Philip- 

 pine islands. Cassides, or Helmets, are found in the same 

 locaHties as the MagiluSy^\X\i the addition of Ceylon and 

 the West Indies. StrutJiiolariu inhabit the shores of Xew 

 Holland ; and the finest specimens of BosteUaria are from 

 China and the Moluccas. Others, unlike the restricted tribes, 

 are generally distributed throughout the globe. Stromhi 

 are foimd in places the most dissimilar, such as the West 

 Indies and Australia, Ceylon, and the Eed Sea. Trikym 

 equally reward the labours of conchologists, whether searching 

 for them in the United States, or the Cape of Good 

 Hope, along the shores of Xew Holland, or those of the 

 Moluccas. 



