Tag Archives: Achatinella elongata Newcomb

Amastra elongata (Newcomb)

Elongated Amastra Snail (Amastra elongata)

This appears to be a somewhat questionable species, its description in the ‘ Manual of Conchology’ reads as follows.:

Three specimens are no. 29960 of the Newcomb collection, Cornell University. One of these may be the type which was said to be unique, but none agrees exactly with Newcomb’s measurements. It is a shell having the color and texture of A. subsoror, with which it agrees in the long, convex embryonic whorl. the surface may be a little rougher. It differs from subsoros in the decidedly more elongate shape and consequently smaller aperture. It differs from A. perversa by the longer, more convex embryonic whorls. Seems to be a valid species, close to those of Maui and Molokai.” [1]

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References:

[1] George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second series: Pulmonata. Vol. 23: Appendix to Amastridae. Tornatellinidae. Index, vols. XXI-XXIII. 1915-1916

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Depiction from: ‘George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second series: Pulmonata. Vol. 23: Appendix to Amastridae. Tornatellinidae. Index, vols. XXI-XXIII. 1915-1916’

(public domain)

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edited: 15.06.2020