Hyatt’s Carelia Snail (Carelia hyattiana)

This form is apparently known from only 11 specimens that all seem to be in a subfossil stage.

“This species is based upon a fossil shell which was associated with C. dolei in the collection, and which evidently came from the same formation. It differs from C. dolei in wanting an angle or carina at the shoulder at all stages of growth. On the last whorl there is an obtuse but quite appreciable basal angle, which, with its shorter aperture, serves to differentiate this species from C. pilsbry Sykes.” [1]

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References:  

[1] George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second series: Pulmonata. Vol 21: Achatinellidae (Amastrinae). 1911
[2] C. Montague Cooke Jr.: The land snail genus Carelia. Bishop Museum Bulletin 85: 1-97. 1931

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edited: 25.01.2024