2019-1020-31
Shell height 16mm, length 18mm.
Washed ashore after storm.
This is dead shell, but fresh specimen.

I already found this species from sand of Pakiri in Misson bay beach,Auckland. but I saw this species for the first time in natural beach. Rarely found on Pakiri beach, but it's commonly seen in dredged sand from Pakiri. (Thanks @predomalpha)