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Additional Photos
shell, 6 mm
young shell, 3.7 mm
underside
crawling
young, underside
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Psilaxis oxytropis (A.
Adams, 1855)
Maximum size:
16 mm shell diameter (Severns, 2000).
Identification:
Shells
of
this
species
are disc-like and smooth with the exception of
the marginal cords. They are cream with a broad spiral
subsutural brown band and radiating brown lines.
They may be distinguished from the shells of Psilaxis radiata
by their larger protoconchs with brown "staining".
Live animals are translucent-cream with white
flecks.
Natural history:
Shells
of
Psilaxis oxytropis
are moderately rare in beach drift (mostly juvenile)
but more common in deeper water. According to Kay
(1979), it's typically found in sand at 50-66 m
(180-216 ft).
Distribution:
Maui,
Oahu, French Frigate Shoals and Midway: widely
distributed in the Indo-Pacific.
Taxonomic notes:
It's listed in Kay, 1979 and Severns, 2000 as Philippia oxytropis
A. Adams, 1855 (with some ambiguity in assignment of the photos in the latter source).
Photo:
CP: Wahikuli, Maui; March 31, 2014.
Observations and
comments:
Note 1:
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