Herpetopoma larochei larochei is a subspecies of marine gastropod mollusc in the family Trochidae, the top shells.
This top shell is endemic
to the North Island
of New Zealand
, including Great Barrier Island
and Mayor Island
The shell is broader that high, periphery angled towards the lower suture
consists of seven beaded spiral cords, two above the peripheral one, two on the base, and two closely spaced, around the closed unbilical
area. The beads are connected axially by retractive lamellae.
Coloration is buff, with a few scattered brown dots.
The maximum shell height is 5 mm, and width 5 mm.