OF CONCHOLOGY 93 



The shells of this genus are known 

 in England by the name of tooth-shells, 

 or sea teeth. 



In Turton's Linn6 22 species oT 

 Dentalium are described ; and seven 

 have been found to inhabit the British 

 coasts. 



Genus 34th.— SERPULA. Ani* 

 mal a Terebella ; shell univalve, tubu- 

 lar, generally adhering to other sub- 

 stances ; often separated internally 

 by divisions at uncertain distances. 

 Linn. Syst. 333. Plate 9th, Kg. 34. 



Habitation. The Serpulae have 

 only been found to inhabit the ocean. 

 They are generally found adhering to 

 stones, shells, and plants, &c. some- 

 times a plurality of species are found 

 on one stone or shell. There are also 

 several species of Serpula which are 

 unattached. 



There have been several attempts 

 to divide and amend the Linnean Ser- 

 pula, which is certainly a very irregu- 



