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spiny keel
 



 
Boschitestella
cf. eloiseae
Moolenbeek, 1994
 
Boschitestella cf. eloiseae: shell
Maximum size:  0.9 mm shell diameter.

Identification:  The shell of this species has a single sharp keel on its periphery. The keel is crossed by relatively fine, angled  axial ribs. Some shells from deeper water at Midway Atoll have fewer but more prominent axial ribs that form short spines on the keel.

Natural history:  Shells of Boschitestella cf. eloiseae are moderately rare in beach drift and subtidal sand samples.

Distribution:  Maui, French Frigate Shoals and Midway: Boschitestella eloiseae is known from Japan.

Taxonomic notes:  Shells of this species are very similar to those of Boschitestella eloiseae as illustrated in Okutani, 2000. It's possible that the "spiny" Midway shells may be a separate species but the spines become less prominent in larger shells (and in shallower water) arguing for lumping.

Photo:  CP: composite photo, same shell; 0.9 mm in diameter: beach drift, Mokuleia Bay, Maui; fall, 1984.

Observations and comments:

Note 1:  ( )
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