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striate
 



 
Limacina trochiformis (d'Orbigny, 1836)
 
Limacina trochiformis: shell
Maximum size:  0.7 mm shell length (rarely over 0.5 mm).

Identification:  Shells of this species have a moderately low spire with a strongly inflated body whorl. Large animals may occasionally develop fine spiral striae.

Natural history:  Shells of Limacina trochiformis are common in sand samples.

Distribution:  Maui: circumglobal.

Taxonomic notes:  Hawaiian shells appear to be smaller with less prominent sutures on the apical whorls than in most populations. (Note 1)

Photo:  CP: 0.5 mm: from a sand sample provided by Mike Severns and PF; off Makena, Maui; Dec.1991.

Observations and comments:

Note 1:  We've only seen one damaged shell that probably exceeded 0.5 mm in length. That shell also had the fine spiral striae reported for large specimens of the species from elsewhere. (see photo)
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