226 INTEODUCTIOX TO COXCHOLOGY. 



from the opening in the rock. Specimens obtained by 

 splitting the masses of coral in which they dwelt, often 

 exhibited these curious creatures as having turned com- 

 pletely at right angles, and at angles again, within their 

 narrow abodes. 



One exception to the isolated habit of the Chitonelli 

 occurred in a small species discovered by Capt. Sir Edward 

 Belcher and Mr. Adams, in the Corean Archipelago, in 

 the Yellow Sea. He was found in company with Chitons, 

 and, on Kfting the stone that covered his domicile, he tra- 

 velled away at about the pace of a garden-snail, in search 

 of retirement. 



Considerable variety exists, therefore, in the mental cha- 

 racters of different moUusks. One, apparently like the 

 anchorite, loves to dwell alone, another prefers society, a 

 third associates only with his clan. He cannot endure the 

 neighbourhood of creatures formed like himself, with similar 

 necessities and incKnations, if they differ in even a few im- 

 material points. 



Whether the ancient Greeks derived the name of Lepas, 

 anciently appropriated to animals of the Limpet kind, 

 from XeTTay, a roch, as expressive of their being found at- 

 tached to rocks, or from XeTn?, a scale, or rind, in allusion 



