75 



Iteviter denticulato ; aperturd angustd ; columelld ųuadriplicatd. 

 Axi£. C lin. 

 Hab. West Indies. 

 Cab. Cuming. 



In some respects similar to the foregoing, but, in the place of its 

 full rounded form, this is contracted towards the middle of the body- 

 whorl. The fasciation is constant cn all the specimens, but ahvays 

 very faint and indistinct, and the small milk-white spots are scattered 

 with little regularity over the surface. 



Marginella austealis. Mar. testd retuse ovatd, alhidd vel pal- 

 lide corned ; spird conico-retusd ; lahro incrassato, poni albido, 

 intus l<evi; columelld quadriplicatd, versus hasin albo fasciatd. 

 Axis 3^ lin. 

 Hab. North-west coast of Australia ; in coral sand at low water. 

 Mr. Dring, R.N. 

 Cab. Cuming. 



The characters of this little shell arė ąuite unobtrusive, if we ex- 

 cept the white base of the columella; and this may serve to distinguish 

 it from any species hitherto on record. 



Margixella vitrea. Mar. testd coniformi, hyalind, nitidd ; spird 

 valde retusd; labro paululum incrassato et refleaio, intiis lavi ; 

 columelld plicis guatuor gracilibus. Axis 3 lin. 

 Hab. West coast of Africa. 

 Cab. Belcher. 



Marginella fusiformis. Mar. testd fusiformi.albidd vel pallidi 

 corned; spird elatd, obtusd ; anfractu ultimo gradatim attenuato ; 

 labro paululum incrassato, intiis Icevi ; aperturd lineari ; columelld 

 ąuadriplicatd. Axis 3 lin. 

 Hab. Straits of Malacca ; in seventeen fathoms, mud. 

 Cab. Belcher. 



This species departs so far from the usual outline of the genus as 

 to become decidedly fusiform. The recent shell is most probably of 

 a delicate horn-colour, though the prevailing number of our speci- 

 mens are \vhite, shining and glossy, and, there seems little doubt, 

 have lošt their original colour. 



The following species belongs to a section of this genus, which 

 might \vith much propriety be separated as a subgeneric group, under 

 the name of Volvarina. They are all dehcate and rather thin shells, 

 with an apparent spire, the labrum never varixed, and usually not 

 even thickened, with a sharp edge, ahvays bent in on the aperture. 

 The columellar folds are nearly constantly four in number, slender. 

 and more or less obliąue. M. avena, Valenciennes, is a typical spe- 

 cies. 



Marginella nitida (Volvarina). Mar. testd elongati ovatd, 

 fuscd, politd, nitidd, concolore ; spird conicd, obtusd ; labro tenui, 

 acuto, inflexo. pallido ; columelld cuadriplicatd. Axis 4 lin. 



Hab. ? 



Cab. Cuming. 



