5 
labii externi margine tenui intus edentulo; labio interno levi 
externe margine tenui; anfractu ultimo antice valde striato, 
striis tenuioribus longitudinaliter decussantibus ; canal brevi, 
lato, subrecurvo. 
Shell oblong-ovate, of an opake milk-white colour, distantly macu- 
lated with dark reddish brown irregular markings, internally white ; 
spire acuminated, constituting the greater half of the length of the 
shell; volutions seven to eight, convex, their posterior margin gene- 
rally very obtusely and distantly coronated; aperture wide, rather 
straight ; outer lip thin at the edge, even, no denticulation within, 
marginated ; inner lip even, having a very slight straight edge or varix 
externally, from which rather strong striations pass over the anterior 
of the dorsum to the outer lip, and very much finer strize longitudi- 
nally pervade the same ; channel short and wide, very slightly curved. 
This shell differs from Columéella Miser, Sowerby, in the absence 
of denticulation, in the last volution being much more gibbous, the 
aperture much wider, the channel decided, the spire more pyramidal, 
and much less coloration and markings. 
Length, 45, of an inch; width, 25, of an inch. 
Hab. Sandwich Islands. Cab. Gaskoin. 
6. CoLuMBELLA vARIcosA. Testa oblongo-ovata, nitens, crassa, 
albicans, colore nigricanti-brunneo irregulariter induta ; mar- 
ginibus posticis anfractuum albicantibus ; spird acuminatd, an- 
fractibus septem vel octo subventricosis varicosis validis promi- 
nentibus subobliquis instructis ; parte anticd ultimi anfractis 
levigatd, anticé supra canalem transverse striatd ; aperturd ob- 
longd subquadratd rectd intus cerulescente, labio externo recto, 
marginato postice incisurd magnd instructo, intus denticulato 
denticulis posticis validiusculis, labio interno levi margine ele- 
vato tenui; canali brevi latiusculo. 
Shell oblong-ovate, shining, thick, strong, of a white colour, gene- 
rally irregularly and greatly covered, more or less intensely, with an 
almost black-brown coloration, excepting the posterior edges of the 
whorls, where it remains nearly white ; spire acuminated, constituting 
one half the length of the shell, has seven to eight volutions, rather 
convex, slightly diagonal; strong, prominent, somewhat distant varices 
exist on the posterior margin of the last whorl, the anterior portion 
of which have many striee passing transversely and obliquely for- 
wards from the columellar edge of the aperture; aperture oblong, 
rather square and straight, internally of a bluish white colour ; outer 
lip straight, marginated, having a rather large notch at the junction 
with the body of the shell, and having anteriorly to this notch, within, 
about five or six slight denticulations, the posterior being the larger ; 
inner lip smooth, without denticulation, edge slightly elevated and 
thin; channel short, rather broad. 
Length, 8°, of an inch; width, ,35, of an inch. 
Hab. Peyta, Peru. Cab. Cuming, Gaskoin. 
7. CorumBeLta Ausrrais. Testa oblongo-ovata, albicans, \4720% 
