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Heliacus trochoides
(Deshayes, 1830)
 
Heliacus trochoides: shell
Maximum size:  8 mm shell diameter (Kay, 1979).

Identification:  This species has a top-shaped shell with a relatively narrow umbilicus.

Natural history:  Shells of  Heliacus trochoides are rare in beach drift. Kay (1979) states that they are found with Heliacus variegatus and Heliacus mighelsi in association with zoanthids.

Distribution:  Maui and Oahu: widely distributed in the Indo-Pacific.

Taxonomic notes:  It's listed in Tinker, 1958 as Heliacus trochoideus.

Photo:  CP: composite photo, same shell; 4.4 mm in diameter: beach drift, Maalaea Bay, Maui; fall, 1987.

Observations and comments:

Note 1:  ( )
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