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Bullina lineata
(Gray, 1825)
 
Bullina lineata
Maximum size:  21 mm (extrapolated from shell length).

Identification:  This species has a pinkish-white shell decorated with dark pink axial and spiral lines. The body is translucent cream. (Note 1)

Natural history:  Bullina lineata is a moderately rare species found in protected to highly exposed mixed habitats. At night, it can occasionally be seen crawling on sand patches or nearby rubble in depths of 1-5 m (3-16 ft). Its egg mass is an irregularly coiled white tube anchored in sand with a mucous thread. It has a sticky surface that collects a coating of sand and the eggs hatch in about six days in the laboratory.

Distribution:  Big Island, Maui, Molokai, Oahu and Kauai: widely distributed in the Indo-Pacific.

Taxonomic notes:  This is the species listed in Kay, 1979 as Bullina scabra (Gmelin, 1791). Bullina lauta Pease, 1860 and Bullina scabra solida (Pilsbry, 1921) are synonyms (Kay, 1979). It's also listed as Bullina scabra solida in Ostergaard, 1950 and illustrated as Micromelo quamensis in Quirk & Wolfe, 1974. It was first reported from Hawaii in Pease, 1860.

Photo:  CP: 18 mm: Hekili Point, Maui; May 1, 2003.

Observations and comments:

Note 1:  Some (but not most) shells of this species show moderate red fluorescence under ultraviolet light (395 nM).
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