

MOLLUSC 4. -I '.'"I 



Whorls 8; five nuclear convex, pink, finely longitudinally Urate; 

 the rest strongly costato and rather convex at the sides. The ribs 

 are thick, rounded, about sixteen in number on the penultimate 

 whorl, subobsolete behind the labrum. The last volution is broad 

 above, contracted inferiorly, the extremity being crossed by several 

 coarsish grooves and ridges. Aperture narrow, only a little nar- 

 rowed anteriorly into a slightly oblique open canal. Outer lip 

 much thickened by a strong external white varix, marked with two 

 brownish-pink spots, one above ami the other below the middle; it 

 is also internally thickened, armed with eight denticles, and sub- 

 sinuated at the upper end. The columella is covered with a callus 

 bearing about five small tubercles near the middle. Length 5| 

 millim., width 3. 



Eagle Island, Amirautes, I2fms. ; sand and coral bottom. 



This is a very pretty little species, having the same form as the 

 typical group of the genus. 



31. Columbella conspersa. 



Gaskoi>i ; Reeve, Conch. Icon. vol. xi. fig. 99. 



Providence Reef, Mascarenes, 24 fins. ; and lie des Neufs, Ami- 

 rantes, in 15 fms. 



Reeve's figure is fairly good in respect of form but misleading as 

 regards the colour of this species. It is a whitish or pinkish-white 

 shell, having the upper and lower parts of the whorls edged with 

 opaque white, and a narrow zone of the same colour round the middle 

 of the body-whorl. It is also blotched with olive-yellow and dotted 

 with that tint upon the opaque bands. The labrum and columella 

 are tinged with lilac-pink, the former being armed with seven or 

 oight denticles and the latter with about six transverse tubercles 

 upon a prominent callosity. 



32. Columbella albocaudata. (Plate XLIV. fig. L.) 



Shell small, ovate-fusiform, pale pink, paler at the apex and white 

 at the extremity of the body-whorl, bordered above with a few 

 spots of a reddish colour. Whorls 8 ; four apical glossy, excentric, 

 convex : the rest less swollen, separated by a moderately deep 

 suture ; last whorl scarcely angled at the middle, contracted 

 towards the anterior end, which is transversely grooved and ridged, 

 the ridges being about twelve in number. Aperture small, con- 

 tracted anteriorly into a short open oblique canal. Labrum thin at 

 the edge, strengthened with a varix at a little distance from the 

 margin, which is distinctly sinuated towards the upper part, and 

 furnished within with about five denticles. Columella perpendicular, 

 arcuate at the middle, covered with a thin callus supporting about 

 four cross tubercles. Length 6 millim., width 2|. 



Providence Eecf, Mascarenes, in 24 fms. ; bottom sand and 

 coral. 



