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Cylindrobulla
sp. #1
 
Cylindrobulla sp. #1
Maximum size:  9 mm.

Identification:  This species has a thin, largely transparent shell with an aperture that's constricted posteriorly. The animal is translucent-gray flecked with opaque white.

Natural history:  Cylindrobulla sp. #1 is a nocturnal, burrowing species. We've seen only three live animals: one in a sand patch at < 1 m (< 3 ft) at a moderately protected back-reef location and the other two in sand samples from Halimeda kanaloana beds obtained from depths of 7-11 m (23-36 ft). However, several additional dead shells found in Halimeda kanaloana beds suggest that it may be more common in that habitat in deeper water. It probably feeds on the buried rhizomes of sand-dwelling Halimeda.

Distribution:  Maui.

Taxonomic notes:  First recorded in Hawaii from Black Rock, Maui by CP on Oct. 16, 1994.

Photo:  PF: 9 mm: found by CP; Black Rock, Maui; Oct. 16, 1994.

Observations and comments:

Note 1:  ( )
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