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Diacria
costata 
(Pfeffer, 1879)
 
Diacria costata: shell
Maximum size:  2.5 mm shell length.

Identification:  The shell of this species is translucent-amber. It's strongly inflated with well developed sculpture.

Natural history:  Shells of Diacria costata are moderately common in sand samples.

Distribution:  Maui, Niihau and French Frigate Shoals: widespread in the Indo-Pacific.

Taxonomic notes: Hawaiian shells seem to have stronger sculpture than most populations and are somewhat smaller, on average.

Photo:  CP: composite photo, 2 shells; 2.4 mm: from a sand sample provided by Mike Severns and PF; off Makena, Maui; Dec. 3, 1991.

Observations and comments:

Note 1:  ( )
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