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Evaletta lacteola
(Preston, 1904)
 
Evaletta lacteola: shell
Maximum size:  8 mm shell length (Kay, 1979).

Identification:  This species has a slender, smooth shell. In shells from accretion platforms, the apex is usually stained brownish pink. In shells from other habitats, the apex is usually white. (Note 1)

Natural history:  Shells of  Evaletta lacteola are moderately common in beach drift.

Distribution:  Maui, Oahu, Kauai and French Frigate Shoals: widely distributed in the Indo-Pacific.

Taxonomic notes:  This species is listed in Kay, 1979 as Syrnola lacteola. It's also probably listed in Severns, 2011 as Eulimella elizabethae and Eulimella laysanensis (in our opinion, the illustrated shells are within the range of variation for E. lacteola and Kay, 1979 was probably correct in synonymizing Turbonilla elizabethae and Turbonilla laysanensis with that species).

Photo:  CP: composite photo, two shells; largest 5.8 mm: left--beach drift, Hookipa, Maui; fall, 1988: right--beach drift, La Perouse Bay, Maui; fall, 1983.

Observations and comments:

Note 1:  Stained and white shells appear to be otherwise identical, supporting lumping the two color forms. In addition, shells of other species embedded in accretion platforms often develop a similar stain. Perhaps, the animal is concentrating the minerals that are responsible?
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