Rugose Fanulena Snail (Fanulena perrugosa)

This species was described in 1945, apparently based on two subfossil shells; it was restricted to Norfolk Island.

“Shell small, tall, elevated, recalling imitatrix [Fanulena imitatrix (Sykes)], with the apical whorls apparently smooth; the other whorls rounded, prominently ribbed, about twenty ribs seen on face, base rounded, periphery subkeeled, columella slightly thickened, not toothed. Breath, 3.75.; height, 4 mm.“

The species was apparently never found alive and is clearly extinct.

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References:

[1] Tom Iredale: The Land Mollusca of Norfolk Island. The Australian Zoologist 11: 46-71. 1945-1951
[2] Diana Neuweger; Peter White; Winston F. Ponder: Land snails from Norfolk Island sites. Records of the Australian Museum, Supplement 27: 115-122. 2001

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edited: 15.01.2024