Libera tumuloides (Garrett)

Rarotongan Libera Snail (Libera tumuloides)

The Rarotongan Libera Snail was described in 1872; it was restricted to the island of Rarotonga, Cook Islands.

The species was apparently very common when it was first collected.:

I took over three hundred examples of this species, all obtained in a small area of about one-half an acre, and nearly two miles inland, at Rarotonga. Through carefully searched for, I failed to discover a single example in any other part of the island.” [1]

The shells reach sizes of 0.62 to 0.72 cm in diameter; they are light yellow horn-colored, with broad, irregular, light- to dark-toned reddish flammulations; the umbilicus was strongly constricted to form a brood chamber.

The species disappeared shortly after its description.

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Depiction from: ‘George W. Tryon; Henry A. Pilsbry; a. o.: Manual of Conchology. Second series: Pulmonata. Vol 3: Helicidae – Volume I. 1887’

(public domain)

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References:

[1] Andrew Garrett: The terrestrial Mollusca inhabiting the Cook’s or Harvey Islands. Journal of the Academy of Natural Sciences of Philadelphia. Ser. 2. Vol. 8(4): 381-412. 1881
[2] George W. Tryon; Henry A. Pilsbry; a. o.: Manual of Conchology. Second series: Pulmonata. Vol 3: Helicidae – Volume I. 1887
[3] Alan Solem: Endodontoid land snails from Pacific Islands (Mollusca: Pulmonata: Sigmurethra). Part I, Family Endodontidae. Field Museum of Natural History Chicago, Illinois 1976

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edited: 17.02.2024