|
|
RISSOELLIDAE |
|
|
|
Rissoella micra (Finlay, 1924) Description: Shell minute, globose, spire variable in height from ½ height of aperture to almost equal to height of aperture. Protoconch of 1½ whorls, coiled about same axis as teleoconch. Teleoconch up to 2¼ whorls; whorls strongly convex, smooth apart from indistinct growth lines. Aperture wide, outer lip thin and simple. Umbilicus open. Shell initially transparent mid-brown, becoming opaque with age. Size: Up to 1.1 mm in length. Distribution: Australia and New Zealand. In Australia, Forster, NSW, southwards to eastern Victoria and Tasmania. Habitat: "On algae and beneath stones on mid to lower littoral and on algae in shallow sublittoral. Often abundant." (Ponder & Yoo, 1977) Comparison: See R. secunda. Synonymy: Notosetia fulva Laseron, 1950 is a previously recognised synonym. Fig. 1: Fairlight, North Harbour, Sydney (C.355063). |
|
