APPENDIX. Xm 



columellae basi aiiirnlatA: I0115;. 1/ lat. 1 ,*- unc. 

 Obs. A very singular shell, which wi- have placed 

 in Turbo, because it approaches nearer to it in i^cne- 

 ral form than to any other ii;enus with wiiich we arc 

 acquainted, ^^'e do not as yet know any of its atti- 

 nities, though we have some reason for thinking it 

 may be related to C'ancellaria. Having given two 

 representations of tiic shell, we shall not here de- 

 scribe it. We are informed that it was brought from 

 Newfoundland. 



1402. TURBO T.ENIATUS. 



T. testA orbiculari-subconiea, tenui, hevissima, im- 

 perforata, albiilA, transvorsini rufo-vitlata; anfrac- 

 tibus quinque rotundatis, ultimo multo majorc; 

 apertura fere orbieulari, intOls margaritacea ; colu- 

 mella subincrassata, extiVs depressiuscuhl : long. 

 ^l unc. lat. 1 unc. 



Obs. A shell which approaclies very nearly in 

 general form to Lamarck's Turbo diaphanus : it is 

 of a cream colour, Avith eight or nine reddish bauds: 

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

 Its locality is unknown to us. 



1418. PLANAXIS PLANICOSTATUS. 



P. testa oblongo-conicH, profundi' transversim sul- 

 cata, costis inter sulcos planulatis : colore fusco- 

 nigricante, apertura pallidiore, columella alba : 

 long, y^j unc. lat. ^ unc. 



Obs. From the Gallipagos Islands, 



1439. TURRITELLA CINGULATA. 



T. testa nlbida vel pallide rastanea, anfractibus tri- 

 cingulatis,ciuguliscastaneis, crcuulatis. long. "2^^ 

 lat. 41 unc. 



Obs. The three crenulated transverse ridges 



form the characteristic feature of this species. 



