Thwing’s Perdicella Snail (Perdicella thwingi)
Thwing’s Perdicella Snail was endemic to the dry Auwahi forest in eastern Maui, Hawaiian Islands.
This was one of the largets species in its genus, the shells are up to 1,6 to 1,7 cm heigh. [1]
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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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(public domain)
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edited: 16.06.2020