shell, 6 mm
young shell, 3.7 mm
Psilaxis oxytropis (A.
16 mm shell diameter (Severns, 2000).
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
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
Oahu, French Frigate Shoals and Midway: widely
distributed in the Indo-Pacific.
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).
CP: Wahikuli, Maui; March 31, 2014.