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Additional Photos
underside
young, 2.5 mm
shell
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GALLERY
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Acteocina sandwicensis Pease, 1860
Maximum size: 8.2 mm
(extrapolated from shell length).
Identification:
This
species
has
a glossy white shell with faint spiral striae. The animal
is translucent cream with white flecks.
Natural history:
Acteocina sandwicensis
is a common burrowing species found in open sand and Halimeda kanaloana beds from 7 m
(23 ft) to
at least 18 m (59 ft). It is also occasionally found in sand patches
in
moderately protected to moderately exposed mixed habitats at depths of
as little
as 1 m (3 ft). Animals held in a sand-bottomed dish laid elongate,
"question
mark-shaped" egg
masses. The largest measured 5 mm in length by 1 mm in width. They had
sticky surfaces and acquired a strongly adherent coating of sand
grains. Hatching may have occurred in as little as 2.5-3 days.
Distribution:
Big Island, Maui, Molokai, Oahu, Kauai, French Frigate Shoals, Lisianski, Pearl & Hermes
Reef and Midway: also
recorded from French Polynesia.
Taxonomic notes:
The
photo
of
this species in Kay, 1979 is mislabeled as Acteocina hawaiensis. Acteocina honoluluensis Pilsbry,
1917 is a synonym (Kay, 1979) and it is also listed under that name in Edmondson, 1946. It was first
reported from Hawaii in Pease, 1860 (as Tornatina sandwicensis).
Photo: CP: 4
mm: Black Rock, Maui; April 8, 2011.
Observations and comments:
Note
1: ( )
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