acuminated posteriorly ; outer lip curved outwards, thin, without deu- 

 ticulations, as is also the inner lip, which is shining, and within of 

 the same colour as the shell ; a slightly elevated varix terminates the 

 inner edge of the aperture, from which fine strise pass obliquely for- 

 ward over the dorsum to the anterior portion of the outer lip ; chan- 

 nel short, slightly curved. 



Length, -^^ of an inch ; vddth, -^^ of an inch. 



Hab. '! Cab. Gaskoin, specimen unicum. 



2. CoLUMBELLA ALBiNODULOSA. Testo oblongo-ovattt, palli- 

 disshne luteo-fulva, fasciis anyustis interrvptis tribiis bninneis; 

 spiru acuminata, anfractibus septem ; nodulis latis prominenti- 

 bus subdistantibus albi-coronatis ; aperturd oblongd subqua- 

 dratdalbd; labio externo crasso, recto, submarginato, intusden- 

 ticidato ; dentibus jjosticis majoribus, labio interna dentibus 

 irregidaribus subvaricosis ; canali recto latiiiscido subelongato. 

 Shell oblong-ovate, of a very light yellowish brown colour, with 

 three interrupted or dotted dark brown narrow bands, the first ex- 

 tending from the anterior point of the outer lip to the centre of the 

 aperture, the second from the anterior third of the margin of the 

 outer lip to the posterior part of the aperture, and the third from 

 the posterior third of the margin of the outer lip along the anterior 

 portion of the volutions spirally to the apex ; broad nodules or tu- 

 bercles, moderately prominent and rather distant, exist from the 

 posterior portion of the outer lip over the dorsum or shoulder, and 

 continuously on the centres of the whorls, and as the whorls become 

 narrow, occupy them longitucUnally on to the point of the spire, each 

 nodule being crowned with an opake white blotch ; opake white irre- 

 gular markings are also on the anterior volution ; spire acuminated, 

 constituting rather less than one half the length of the shell ; seven 

 volutions, rather convex ; aperture straight, rather wide ; outer lip 

 sharp at its edge, straight, curving suddenly on forming the channel ; 

 just within the lip is a row of about eight rather prominent teeth, the 

 posterior being the larger ; inner lip slightly denticulated with about 

 six irregular varices, with a slight sharp prominence at its margin, 

 the large whorl ribbed with fine striae, most prominent anteriorly ; 

 channel straight, rather wide, slightly elongated and recurved. 

 Length, -.^ of an inch ; width, ^^ of an inch. 

 Hab. 1 Cab. Gaskoin. 



3. CoLUMBELLA iNTERRUPTA. Tcstu oblongo-ovata, albicans, 

 fasciis duabus interrvptis latis rvfescenti-brunneis ; fascia an- 

 ticd pallidiore ; spird acuminata, anfractibus septem vel acta; 

 aperturd latiiisculd jircecipue ad partem posticam ; labio ex- 

 terno crasso margine acuta, intus denticulato, denticulis qua- 

 tuor vel quinque; labio interna cum margine externo denticu- 

 lato, aurantiaco ; testa extus cancellatd striis spiralibus vali- 

 dis, longitudinalibus temiibus ; peritremate pallide aurantiaco, 

 postice subobtuso angulari ; canali breviusculo latiusculo. 



Shell oblong-ovate, of a dull greyish white colour, with two distinct. 



