APPENDIX. Xni 



columellae basl angulatA,: long;, I^ lat. 1-A. unc. 

 Obs. A very singular shell, which wc have placed 

 in Turbo, because it approaches nearer to it in gene- 

 ral form than to any other genus with which we arc 

 acquainted. We do not as yet know any of its affi- 

 nities, though we have some reason for thinking it 

 may be related to Cancellaria. Having given two 

 representations of the shell, we shall not here de- 

 scribe it. We are informed that it was brought from 

 Newfoundland. ' 



1402. TURBO TiENIATUS. 



T. testa orbiculari-subconicS,, tenui, Isevissim^, im- 

 perforata, albida, transversimrufo-vittata; anfrac- 

 tibus quinque rotundatis, ultimo multo majore; 

 apertura fere orbicularly inti\s margaritacea ; colu- 

 mella subincrassata^ extiis depressiuscula : long. 

 i^ imc. lat. 1 unc. 



Obs. A shell which approaches very nearly in 

 general form to Lamarck's Turbo diaphanus : it is 

 of a cream colour, with eight or nine reddish bands : 

 the sutures are indistinct, and it is a very thin shell. 

 Its locality is unknown to us. 



1418. PLANAXIS PLANICOSTATUS. 



P. testa oblongo-conica, profunde transversim sul- 

 cata, costis inter sulcos planulatis : colore fusco- 

 nigricante, apertur^ pallidiore^ columella alb^ : 

 long, -^s unc. lat. | unc. 



Obs. From the Gallipagos Islands. 



1439. TURRITELLA CINGULATA. 



T. test^ albida vel pallide castane^, anfractibus tri- 

 cingulatis, cingulis castaueis, crenulatis. long. 2^'^ 

 lat. iiunc. 



Obs. The three crenulated transverse ridges 



form the characteristic feature of this species. 



