4 
270 Mr. H. B. Preston on new Species of 
Alt. 4, diam. maj. 6, diam. min. 4°5 mm. 
Aperture: alt. 3°75, diam. 2 mm. 
Hab. From the stomachs of fish taken in Bransfield Straits, 
South Shetland Islands (A. G. Bennett). 
Lunatia bransfieldensis, sp. n. (Fig. 2.) 
Shell perforate, ovate, rather basally elongated, whitish ; 
whorls 34, the last large, descending in front, smooth ; suture 
impressed ; umbilicus narrow, deep; columella margin 
descending obliquely, then rather sharply curved and very 
obliquely descending in the opposite direction, extending 
above into a thickish, white, well-defined, parietal callus, 
which recedes in its median part to form a very broad sinus ; 
labrum simple ; aperture ovate ; operculum concave, corneous, 
shining, laminiferous, three-whorled, with excentric nucleus. 
Alt. 8, diam. maj. 7°75, diam. min. 6:25 mm. 
Alt. 6°25, diam. 4 mm. 
Hab. From the stomachs of fish, taken in 15 fathoms, 
Bransfield Straits, South Shetland Islands (A. G. Bennett). 
Levilitorina claviformis, sp.n. (Fig. 3.) 
Shell subcorneous, perforate, turbinately fusiform, reddish 
brown; remaining whorls 4, the first three regularly in- 
creasing, the last very rapidly so, convex, smooth but for 
transverse growth-lines ; suture impressed ; umbilicus very 
narrow, appearing as a narrow fissure ; columella margin 
descending in an oblique curve, very slightly outwardly 
reflexed, extending above into a thick, restricted, well-defined, 
parietal callus, which unites it with the upper margin of the 
labrum ; labrum very narrowly outwardly dilated ; aperture 
rather roundly ovate, large for the size of the shell; oper- 
culum horny laminiferous, paucispiral, with excentric nucleus. 
Alt. 4, diam. maj. 2°75, diam. min. 2 mm. 
Hab. On rocks at low water inside Deception Harbour, 
South Shetlands (A. G. Bennett). 
Mr. Bennett collected a large number of this form, all of 
which have lost their extreme apices through erosion ; it is a 
very variable species both in general shape and in the colour 
of the interior of the shell, which in some specimens is of a 
lilac-colour, while in others it is of an olive-green or brown 
hue. 
Pellilitorina bennetti, sp.n. (Fig. 4.) 
Shell small, imperforate, subcorneous, ovate, reddish 
