3 
acuminated posteriorly ; outer lip curved outwards, thin, without den- 
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 strize pass obliquely for- 
ward over the dorsum to the anterior portion of the outer lip; chan- 
nel short, slightly curved. 
Length, 52, of an inch; width, ,2,4, of an inch. 
Hab. ? Cab. Gaskoin, specimen unicum. 
2. CoLUMBELLA ALBINODULOSA. Testa oblongo-ovata, palli- 
dissimé luteo-fulva, fasciis angustis interruptis tribus brunneis; 
spird acuminatd, anfractibus septem ; nodulis latis prominenti- 
bus subdistantibus albi-coronatis; aperturd oblongd subqua- 
draté albd; labio externo crasso, recto, submarginato, intus den- 
ticulato; dentibus posticis majoribus, labio interno dentibus 
irregularibus subvaricosis ; canali recto latiusculo 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 longitudinally 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 striee, most prominent anteriorly ; 
channel straight, rather wide, slightly elongated and recurved. 
Length, 45, of an inch; width, 29, of an inch. 
Hab. 
2 Cab. Gaskoin. 
3. CoLUMBELLA INTERRUPTA. Testa oblongo-ovata, albicans, 
fasciis duabus interruptis latis rufescenti-brunnets ; Sascid an- 
ticd pallidiore; spird acuminatd, anfractibus septem vel octo ; 
aperturd latiusculd precipue ad partem posticam ; labio ex- 
terno crasso margine acuto, intus denticulato, denticulis qua- 
tuor vel quinque; labio interno cum margine externo denticu- 
lato, aurantiaco; testd extus cancellatd striis spiralibus vali- 
dis, longitudinalibus tenuibus ; peritremate pallide aurantiaco, 
posticé subobtuso angulari ; canali breviusculo latiusculo. 
Shell oblong-ovate, of a dull greyish white colour, with two distinct, 
