PLATE CLXIL 



DENTALTUM OCTANGULATUM. 



EIGHT-RIDGED TOOTH-SHELL. 

 GENERIC CHARACTER. 



Animal a Terehella. Shell univalve, tubular, straight or slightly- 

 curved, with an undivided cavity open at both ends. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell white, somewhat curved, with eight ribs or angles, and three 



intermediate stria;. 



Dentalium octangulatum : testa alba subarcuata octangulata: 



interstitius tri-striatis. 



Dentalium striatulum :i Gmel. Syst. Nat. 3738. sp. 13 ? 



For the discovery of this elegantly striated tooth-shell, as a native 

 of the British coasts, we have once again to acknowledge our obli- 

 gation to a lady, mentioned on other similar occasions in the progress 

 of this work, Miss Pocock ; several shells of this kind were found 

 by her on the sandy coasts of Cornwall, near Lelant, in the year 

 1802. 



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