9 



the dorsum of the channel to the anterior portion of the outer lip ; 

 channel short. 



A variety of this species is rather larger in size, with the markings 

 along the posterior edge of the three last whorls in somewhat distant, 

 brown, square spots, from which rather distant undulating lines of a 

 lighter colour pass longitudinally over the volutions, while in some 

 specimens the colour is more en masse on the last whorl with small 

 circular spots in it, showing the colour of the shell. 



Length, -^^^ of an inch ; wddth, ^LS-. of an inch. 



Had. Marquesas. Cab. Gaskoin, Gubba. 



13. CoLTJMBELLA AusTRiNA. Testu ohlongo-ovttta, Icevis, nitens, 

 albicans, punctulis distajitibus pallidissime hrunneis, fascidqne 

 untied laid hrnnned ornata ; spird acuminata, anfractibus sep- 

 tem vel octo, convexiusculis ; suturd distinctd ; aperturd latiii.s- 

 culd, labio externa postice intus emarginato ; margine acutius- 

 culo versus canalem incurvo, intus denticulis prominentibus octo 

 vel novem ; labio columellari recto, nitido, denticulis septem an- 

 tice positis, margine externo subelevato ; peritremate albicante, 

 aperturd intus violaceo-brunned ; canali subprominente, latius- 

 culo, dorso canalis transve7'sim striata. 



Shell oblong-ovate, of a dull white colour, smooth and shining, 

 with light brown coloration, or interrupted from the anterior side of 

 the volutions of the spire, and extending, more or less faintly, over 

 them ; a much darker broad band occupies three-fourths, at its centre, 

 of the last whorl, the colour gradually softening into the whitish an- 

 terior, posterior, and outer portions of the whorl ; spire acuminated, 

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

 to eight, rather convex, slightly ridged at the suture ; aperture rather 

 long, and moderately wide and straight ; outer lip forms a broad notch 

 at its juncture with the body of the shell, edge sharp, curving much 

 towards the channel, externally thickened ; within are eight or nine 

 rather prominent denticulations, diminishmg in size from their com- 

 mencement at the anterior edge of the notch ; inner lip straight, 

 smooth and shining, with a row of about seven small, even, round 

 teeth, which extend over the columella, and a very slightly raised 

 sharp varix forms the outer edge of the aperture proceeding to the 

 end of the channel ; from this varix fine striae pass over the dorsum 

 of the channel to the anterior part of the outer lip ; peritreme whitish, 

 the interior of the shell of a rather violaceous colour ; channel slightly 

 projecting, moderately wide. 



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



Hab. Australia. Cab. Cuming, Gaskoin. 



14. CoLUMBELLA BACCATA. Test a oblongo-ovata, albicans, fas- 

 ciis tribus interruptis saturate rufescenti-brunneis, jmnctulis 

 opacis albicantibus rotundis per lineas obliquas vel longitudi- 

 nal es positis ; spird acutninatd, anfractibus septem, quorum tri- 

 bus anticis leeinbus, posticis obtuse longitudinaliter striatis ; 

 apice albicante ; aperturd latiusculd intus albicante fasciis 



