A Field Guide to the Snails of Lord Howe Island

134 Family Punctidae (Pinhead or Dot Snails) Pernastela charon Iredale, 1944 Lowland Forest Pinhead Snail Shell. Size: H = 2.1-2.5 mm, D = 3.2-3.5 mm. Colour: Pale golden brown to cream. Shape: Trochoidal with a raised spire; whorls rounded above and flattened below an angulate periphery. Sculpture: Protoconch with spiral lirae; teleoconch with strong, sinuate, moderately spaced radial ribs; microsculpture of spiral lirae. Aperture: Roundly lunate, flattened on upper side by reflected lip. Umbilicus: Moderately wide. Animal. Not known. Key distinguishing features. Relatively large size, angulate periphery, distinct ribs. Habitat and occurrence. Found primarily in the settlement area (Johnson’s Beach to N end Middle Beach), with a few specimens known from Old Settlement. Lowland mixed forest, living in litter. Moderately abundant within its range, but rarely collected live. Remarks. Differs from P. gnoma in its larger size and more strongly angulate whorls, and from P. howensis in its more widely spaced ribs. Wet basalt rock faces at Black Face, Mt Lidgbird