Zebra Perdicella Snail (Perdicella zebra)
The Zebra Perdicella Snail, which was endemic to eastern Maui in the Hawaiian Islands, was described in 1855 based on a single specimen.:
“It seems to resemble P. ornata in color-pattern, differing from zebrina Pfr. by the basal band.” [1]
The shell of this smaller species reached a height of about 1 cm.
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References:
[1] George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second series: Pulmonata. Vol. 22: Achatinellidae. 1912-1914
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edited: 16.06.2020