Ringicula parvula, sp. nov.

(Fig. 48).

Shell very small, broad, solid, milk-white and glossy. Whorls rounded, chanelled at the suture; incised by half a dozen sharp narrow grooves at and below the periphery. The mouth armature consists of a large blunt tooth in the middle of the outer lip, an elevated and much compressed one on the body whorl and two others, distant, rounded and oblique on the columella. Length 1•6, breadth 1 mm.

Fig. 48

Differs in dentition and contour from R. mariei, Morelet, and R. acuta v. minuta, H. Adams, and in its minute size from all others of the genus.

One specimen from the lagoon beach.