Dear Brett, and others,
According to Ponder (1985) - a review of the genera of the Rissoidae
(Records of the Australian Museum supplement 4):
Zebinella Mörch, 1876. p. 47. Type species (Helix) decussata Montagu 1803;
subsequent designation Martens 1878. p. 30, Recent, West Indies.
Listed in the above publication as synonym of Rissoina
Hope this helps
Patty
Dr. Patty Jansen
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